/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:29:21,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:29:21,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:29:21,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:29:21,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:29:21,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:29:21,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:29:21,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:29:21,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:29:21,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:29:21,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:29:21,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:29:21,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:29:21,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:29:21,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:29:21,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:29:21,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:29:21,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:29:21,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:29:21,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:29:21,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:29:21,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:29:21,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:29:21,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:29:21,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:29:21,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:29:21,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:29:21,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:29:21,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:29:21,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:29:21,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:29:21,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:29:21,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:29:21,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:29:21,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:29:21,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:29:21,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:29:21,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:29:21,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:29:21,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:29:21,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:29:21,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:29:21,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:29:21,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:29:21,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:29:21,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:29:21,253 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:29:21,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:29:21,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:29:21,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:29:21,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:29:21,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:29:21,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:29:21,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:29:21,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:29:21,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:29:21,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:29:21,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:29:21,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:29:21,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:29:21,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:29:21,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:29:21,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:29:21,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:29:21,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:29:21,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:29:21,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:29:21,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:29:21,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:29:21,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:29:21,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:29:21,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:29:21,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:29:21,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:29:21,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:29:21,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:29:21,732 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:29:21,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i [2020-10-29 09:29:21,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a6a4a36e/a94f79f7547b439aab72d2631f17ef7a/FLAGdb1c20fa9 [2020-10-29 09:29:22,542 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:29:22,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i [2020-10-29 09:29:22,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a6a4a36e/a94f79f7547b439aab72d2631f17ef7a/FLAGdb1c20fa9 [2020-10-29 09:29:22,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a6a4a36e/a94f79f7547b439aab72d2631f17ef7a [2020-10-29 09:29:22,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:29:22,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:29:22,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:29:22,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:29:22,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:29:22,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:29:22" (1/1) ... [2020-10-29 09:29:22,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6499f400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:22, skipping insertion in model container [2020-10-29 09:29:22,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:29:22" (1/1) ... [2020-10-29 09:29:22,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:29:22,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:29:23,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:29:23,434 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:29:23,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:29:23,599 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:29:23,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:23 WrapperNode [2020-10-29 09:29:23,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:29:23,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:29:23,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:29:23,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:29:23,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:23" (1/1) ... [2020-10-29 09:29:23,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:23" (1/1) ... [2020-10-29 09:29:23,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:23" (1/1) ... [2020-10-29 09:29:23,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:23" (1/1) ... [2020-10-29 09:29:23,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:23" (1/1) ... [2020-10-29 09:29:23,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:23" (1/1) ... [2020-10-29 09:29:23,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:23" (1/1) ... [2020-10-29 09:29:23,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:29:23,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:29:23,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:29:23,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:29:23,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:29:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:29:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:29:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:29:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:29:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:29:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:29:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:29:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-29 09:29:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-29 09:29:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2020-10-29 09:29:23,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:29:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:29:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:29:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:29:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:29:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:29:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:29:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:29:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:29:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:29:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:29:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:29:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:29:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:29:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:29:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:29:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:29:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:29:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:29:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:29:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:29:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:29:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:29:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:29:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:29:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:29:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:29:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:29:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:29:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:29:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:29:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:29:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:29:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:29:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:29:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:29:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:29:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:29:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:29:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:29:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:29:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:29:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:29:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:29:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:29:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:29:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:29:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:29:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:29:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:29:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:29:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:29:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:29:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:29:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:29:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:29:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:29:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:29:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:29:23,809 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:29:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:29:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:29:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:29:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:29:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:29:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:29:23,810 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:29:23,811 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:29:23,811 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:29:23,811 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:29:23,811 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:29:23,811 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:29:23,811 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:29:23,811 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:29:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:29:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:29:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:29:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:29:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:29:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:29:23,812 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:29:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:29:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:29:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:29:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:29:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:29:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:29:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:29:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:29:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:29:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:29:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:29:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:29:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:29:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:29:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:29:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:29:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:29:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:29:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:29:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:29:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:29:23,815 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:29:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:29:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:29:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:29:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:29:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:29:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:29:23,816 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:29:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:29:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:29:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:29:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:29:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:29:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:29:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-29 09:29:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-29 09:29:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:29:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:29:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2020-10-29 09:29:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:29:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:29:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:29:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:29:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:29:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:29:24,386 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:29:24,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:29:24,678 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 09:29:24,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:29:24 BoogieIcfgContainer [2020-10-29 09:29:24,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:29:24,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:29:24,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:29:24,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:29:24,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:29:22" (1/3) ... [2020-10-29 09:29:24,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25524140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:29:24, skipping insertion in model container [2020-10-29 09:29:24,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:29:23" (2/3) ... [2020-10-29 09:29:24,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25524140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:29:24, skipping insertion in model container [2020-10-29 09:29:24,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:29:24" (3/3) ... [2020-10-29 09:29:24,690 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_unequal.i [2020-10-29 09:29:24,703 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:29:24,709 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:29:24,724 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:29:24,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:29:24,754 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:29:24,754 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:29:24,754 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:29:24,754 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:29:24,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:29:24,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:29:24,755 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:29:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-29 09:29:24,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:29:24,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:24,785 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] [2020-10-29 09:29:24,785 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:24,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:24,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1769859905, now seen corresponding path program 1 times [2020-10-29 09:29:24,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:24,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289113163] [2020-10-29 09:29:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:25,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:30,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:30,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 09:29:30,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:29:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 09:29:30,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:30,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:29:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:29:30,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:29:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:30,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:30,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:30,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:29:30,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:30,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:30,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:30,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:30,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:30,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:30,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:29:30,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:30,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:29:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:30,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:30,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:30,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:30,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:30,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:29:30,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:30,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:30,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:30,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:30,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:30,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:29:30,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 09:29:30,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:30,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:29:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:30,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:30,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:30,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:30,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 09:29:30,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:30,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:29:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:29:30,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289113163] [2020-10-29 09:29:30,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:29:30,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 09:29:30,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897685156] [2020-10-29 09:29:30,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:29:30,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:30,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:29:30,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:29:30,833 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 13 states. [2020-10-29 09:29:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:31,827 INFO L93 Difference]: Finished difference Result 122 states and 164 transitions. [2020-10-29 09:29:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:29:31,829 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-29 09:29:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:31,839 INFO L225 Difference]: With dead ends: 122 [2020-10-29 09:29:31,839 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 09:29:31,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:29:31,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 09:29:31,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-10-29 09:29:31,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 09:29:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-29 09:29:31,892 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 37 [2020-10-29 09:29:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:31,894 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-29 09:29:31,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:29:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-29 09:29:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:29:31,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:31,897 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] [2020-10-29 09:29:31,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:29:31,897 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:31,898 INFO L82 PathProgramCache]: Analyzing trace with hash -64858502, now seen corresponding path program 1 times [2020-10-29 09:29:31,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:31,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612037216] [2020-10-29 09:29:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:31,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:32,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:34,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:29:34,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:29:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2444 [2020-10-29 09:29:34,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:34,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:29:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:29:34,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:34,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:34,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:34,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:29:34,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:34,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:34,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:34,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:34,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 09:29:34,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:34,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:34,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:29:34,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:34,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:34,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:34,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:34,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:34,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 09:29:34,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:34,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:34,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:34,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:34,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:34,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:35,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:35,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:29:35,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 09:29:35,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:35,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:29:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:29:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:35,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:35,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:35,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:35,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:35,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 09:29:35,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:35,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:29:35,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612037216] [2020-10-29 09:29:35,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:35,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:29:35,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706957364] [2020-10-29 09:29:35,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:29:35,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:35,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:29:35,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:29:35,430 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 18 states. [2020-10-29 09:29:36,552 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-29 09:29:36,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:36,964 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-10-29 09:29:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:29:36,965 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2020-10-29 09:29:36,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:36,968 INFO L225 Difference]: With dead ends: 66 [2020-10-29 09:29:36,968 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 09:29:36,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:29:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 09:29:36,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-10-29 09:29:36,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 09:29:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-29 09:29:36,989 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 39 [2020-10-29 09:29:36,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:36,989 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-29 09:29:36,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:29:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-29 09:29:36,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:29:36,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:36,993 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, 1] [2020-10-29 09:29:36,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:29:36,996 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:36,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:36,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1772999278, now seen corresponding path program 1 times [2020-10-29 09:29:36,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:36,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887623571] [2020-10-29 09:29:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:37,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:37,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:39,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:39,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 09:29:39,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:39,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2311 [2020-10-29 09:29:39,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:39,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:29:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:29:39,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:39,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:39,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:39,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:39,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:29:39,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:39,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:39,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:39,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:39,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:39,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:39,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:39,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 09:29:39,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:39,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:39,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:39,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:39,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 09:29:39,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:39,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:39,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:39,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:29:39,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:39,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:39,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:39,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:39,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:39,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:39,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:39,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 09:29:39,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:39,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:29:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:40,539 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-29 09:29:40,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:40,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:40,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:40,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:40,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 09:29:40,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:40,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:40,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:29:40,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887623571] [2020-10-29 09:29:40,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:40,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:29:40,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223088737] [2020-10-29 09:29:40,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:29:40,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:40,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:29:40,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:29:40,839 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 21 states. [2020-10-29 09:29:41,930 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-29 09:29:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:42,423 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2020-10-29 09:29:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:29:42,424 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2020-10-29 09:29:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:42,428 INFO L225 Difference]: With dead ends: 71 [2020-10-29 09:29:42,428 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 09:29:42,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:29:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 09:29:42,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-10-29 09:29:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 09:29:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-29 09:29:42,459 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 40 [2020-10-29 09:29:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:42,459 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-29 09:29:42,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:29:42,460 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-29 09:29:42,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:29:42,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:42,464 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, 1, 1, 1] [2020-10-29 09:29:42,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:29:42,464 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:42,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1286249367, now seen corresponding path program 1 times [2020-10-29 09:29:42,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:42,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234659541] [2020-10-29 09:29:42,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:43,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:43,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:29:43,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:43,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1361 [2020-10-29 09:29:43,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:43,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 09:29:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:29:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:44,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:44,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:44,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:44,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:44,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:29:44,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:44,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:44,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:44,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:44,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:44,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:44,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 09:29:44,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:44,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:29:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:29:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:44,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:44,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:44,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:44,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:44,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 09:29:44,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:44,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:29:44,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:44,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:44,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:44,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-29 09:29:44,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:44,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:44,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:29:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:44,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:45,199 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-29 09:29:45,477 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-29 09:29:45,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:45,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:45,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:45,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:45,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 09:29:45,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:45,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:29:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:45,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:29:46,069 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-29 09:29:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:29:46,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234659541] [2020-10-29 09:29:46,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:46,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:29:46,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929544529] [2020-10-29 09:29:46,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:29:46,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:46,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:29:46,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:29:46,099 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 24 states. [2020-10-29 09:29:47,636 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-10-29 09:29:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:48,406 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-10-29 09:29:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:29:48,408 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 42 [2020-10-29 09:29:48,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:48,410 INFO L225 Difference]: With dead ends: 73 [2020-10-29 09:29:48,411 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 09:29:48,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=114, Invalid=1218, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:29:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 09:29:48,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2020-10-29 09:29:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 09:29:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-10-29 09:29:48,430 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 42 [2020-10-29 09:29:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:48,430 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-10-29 09:29:48,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:29:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-10-29 09:29:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:29:48,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:48,433 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] [2020-10-29 09:29:48,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:29:48,433 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:48,434 INFO L82 PathProgramCache]: Analyzing trace with hash -2002934445, now seen corresponding path program 1 times [2020-10-29 09:29:48,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:48,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709370597] [2020-10-29 09:29:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:49,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:53,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:53,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:29:53,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:29:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:29:53,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:53,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:29:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:29:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:29:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:29:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:53,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:53,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:29:53,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:29:53,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:53,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:29:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:29:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:53,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:29:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:53,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:53,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:29:53,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:53,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 09:29:53,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:53,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:53,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:53,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:53,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:29:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:53,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:53,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:53,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:53,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:53,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:29:53,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:53,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:29:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:29:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:29:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:53,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:53,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:53,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:29:53,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:53,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 09:29:53,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:53,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:53,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:29:53,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:53,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:29:53,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:54,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:54,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:54,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:54,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 09:29:54,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:54,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:29:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:29:54,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709370597] [2020-10-29 09:29:54,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:54,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:29:54,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824873289] [2020-10-29 09:29:54,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:29:54,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:54,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:29:54,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:29:54,500 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 19 states. [2020-10-29 09:29:55,659 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-29 09:29:55,969 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-10-29 09:29:56,269 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-29 09:29:56,515 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-10-29 09:29:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:29:56,940 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-10-29 09:29:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:29:56,941 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2020-10-29 09:29:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:29:56,944 INFO L225 Difference]: With dead ends: 74 [2020-10-29 09:29:56,944 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 09:29:56,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:29:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 09:29:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-29 09:29:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 09:29:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-10-29 09:29:56,957 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 42 [2020-10-29 09:29:56,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:29:56,957 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-10-29 09:29:56,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:29:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-10-29 09:29:56,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 09:29:56,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:29:56,959 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:29:56,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:29:56,959 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:29:56,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:29:56,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1592427198, now seen corresponding path program 1 times [2020-10-29 09:29:56,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:29:56,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758077828] [2020-10-29 09:29:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:29:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:56,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:57,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:58,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 09:30:00,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:30:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3199 [2020-10-29 09:30:00,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:30:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:30:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:00,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:30:00,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:30:00,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:30:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 09:30:00,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:30:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:30:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:00,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:00,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:30:00,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:00,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:00,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:30:00,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:30:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:30:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:30:00,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 09:30:00,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:30:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:30:00,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:00,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:00,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:00,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:00,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 09:30:00,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:00,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:30:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:30:00,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758077828] [2020-10-29 09:30:00,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:00,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:30:00,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203517666] [2020-10-29 09:30:00,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:30:00,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:00,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:30:00,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:30:00,977 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 18 states. [2020-10-29 09:30:01,888 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-29 09:30:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:02,422 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-10-29 09:30:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:30:02,426 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2020-10-29 09:30:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:02,427 INFO L225 Difference]: With dead ends: 73 [2020-10-29 09:30:02,428 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 09:30:02,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:30:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 09:30:02,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-29 09:30:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 09:30:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-10-29 09:30:02,441 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 47 [2020-10-29 09:30:02,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:02,441 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-10-29 09:30:02,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:30:02,442 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-10-29 09:30:02,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:30:02,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:02,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:30:02,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:30:02,443 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:02,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1663009958, now seen corresponding path program 1 times [2020-10-29 09:30:02,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:02,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618449490] [2020-10-29 09:30:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:02,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:05,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:05,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 09:30:05,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:30:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3070 [2020-10-29 09:30:05,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:05,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:05,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:30:05,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:05,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 09:30:05,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:05,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:05,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:05,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:30:05,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:05,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:05,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:05,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:05,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:05,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:30:05,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:05,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 09:30:05,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:05,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:05,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:30:05,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:30:05,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:05,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:05,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:05,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:05,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:30:05,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:05,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:05,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:05,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:05,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:05,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:30:05,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:05,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:30:05,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:30:05,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:30:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:06,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:06,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:30:06,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 09:30:06,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:06,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:30:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:30:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:06,503 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-10-29 09:30:06,741 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-29 09:30:06,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:06,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:06,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:06,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:06,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:06,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:30:06,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:06,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:30:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:30:07,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618449490] [2020-10-29 09:30:07,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:07,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:30:07,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969804896] [2020-10-29 09:30:07,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:30:07,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:07,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:30:07,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:30:07,015 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 21 states. [2020-10-29 09:30:07,892 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-29 09:30:08,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:08,604 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-29 09:30:08,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:30:08,604 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 48 [2020-10-29 09:30:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:08,606 INFO L225 Difference]: With dead ends: 71 [2020-10-29 09:30:08,606 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 09:30:08,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:30:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 09:30:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2020-10-29 09:30:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 09:30:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2020-10-29 09:30:08,619 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 48 [2020-10-29 09:30:08,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:08,619 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2020-10-29 09:30:08,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:30:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2020-10-29 09:30:08,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:30:08,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:08,621 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, 1, 1, 1, 1, 1, 1] [2020-10-29 09:30:08,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:30:08,621 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:08,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:08,622 INFO L82 PathProgramCache]: Analyzing trace with hash 115084195, now seen corresponding path program 1 times [2020-10-29 09:30:08,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:08,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268419696] [2020-10-29 09:30:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:08,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:08,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:30:08,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 09:30:08,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:08,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:30:08,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:30:08,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:08,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:08,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:08,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:08,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:30:08,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:08,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:08,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:08,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:08,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:08,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:08,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:08,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:08,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:30:08,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:30:08,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:08,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:30:08,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:30:08,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:08,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:08,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:08,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:08,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:08,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:30:08,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:08,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:30:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:30:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:30:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:08,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:08,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:30:08,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:30:08,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:08,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 09:30:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:08,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:08,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:08,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:08,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:08,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:08,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:30:08,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:08,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:08,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:08,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:08,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:08,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:30:08,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268419696] [2020-10-29 09:30:08,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:30:08,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:30:08,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149932330] [2020-10-29 09:30:08,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:30:08,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:08,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:30:08,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:30:08,924 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 7 states. [2020-10-29 09:30:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:09,182 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-10-29 09:30:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:30:09,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-29 09:30:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:09,184 INFO L225 Difference]: With dead ends: 90 [2020-10-29 09:30:09,184 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 09:30:09,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:30:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 09:30:09,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-29 09:30:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 09:30:09,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-10-29 09:30:09,197 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 45 [2020-10-29 09:30:09,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:09,197 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-10-29 09:30:09,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:30:09,197 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-10-29 09:30:09,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:30:09,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:09,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:30:09,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:30:09,199 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:09,199 INFO L82 PathProgramCache]: Analyzing trace with hash 388196513, now seen corresponding path program 1 times [2020-10-29 09:30:09,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:09,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951384111] [2020-10-29 09:30:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:14,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 09:30:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:30:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 09:30:14,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:14,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 09:30:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:14,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:30:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:30:14,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:14,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:14,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:14,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:30:14,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:14,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:14,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:14,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:14,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:30:14,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 09:30:14,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:14,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:30:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:30:14,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:14,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:14,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:14,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:14,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:14,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:30:14,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:14,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:14,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:14,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:14,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:30:14,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:14,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:14,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:14,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:14,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:14,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:14,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:30:14,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:14,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:14,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:14,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:14,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:14,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:30:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:14,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:14,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:14,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:30:14,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 09:30:14,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:14,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:30:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:30:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:15,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:15,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:15,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:15,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:15,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:30:15,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:15,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:30:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:30:15,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951384111] [2020-10-29 09:30:15,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:15,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:30:15,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056557364] [2020-10-29 09:30:15,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:30:15,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:15,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:30:15,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:30:15,569 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 23 states. [2020-10-29 09:30:16,790 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-29 09:30:17,057 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-29 09:30:17,300 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-29 09:30:17,584 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-29 09:30:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:17,934 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2020-10-29 09:30:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:30:17,935 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 50 [2020-10-29 09:30:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:17,937 INFO L225 Difference]: With dead ends: 71 [2020-10-29 09:30:17,937 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 09:30:17,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:30:17,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 09:30:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 09:30:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 09:30:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-29 09:30:17,953 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 50 [2020-10-29 09:30:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:17,954 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-29 09:30:17,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:30:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-29 09:30:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:30:17,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:17,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:30:17,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:30:17,955 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:17,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:17,956 INFO L82 PathProgramCache]: Analyzing trace with hash -328488565, now seen corresponding path program 1 times [2020-10-29 09:30:17,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:17,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910073063] [2020-10-29 09:30:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:19,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:19,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 09:30:19,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:30:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1717 [2020-10-29 09:30:19,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:19,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:30:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 09:30:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:19,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:19,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:19,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:19,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:30:19,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:19,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:19,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:20,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:20,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:20,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:30:20,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:20,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 09:30:20,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:20,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:30:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:30:20,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:20,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:20,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:20,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:20,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:30:20,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:20,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:30:20,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:20,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:20,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:20,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:20,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:20,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:30:20,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:20,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:30:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:20,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:30:20,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:30:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:20,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:20,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:20,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:30:20,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 09:30:20,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:20,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:30:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:30:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:20,988 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-29 09:30:21,467 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2020-10-29 09:30:21,932 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-29 09:30:22,478 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2020-10-29 09:30:22,896 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 63 [2020-10-29 09:30:23,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:23,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:23,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:23,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:23,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 09:30:23,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:23,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:30:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:23,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:24,197 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 62 [2020-10-29 09:30:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:30:24,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910073063] [2020-10-29 09:30:24,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:24,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:30:24,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652389392] [2020-10-29 09:30:24,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:30:24,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:24,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:30:24,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:30:24,630 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 24 states. [2020-10-29 09:30:25,143 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 09:30:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:26,578 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2020-10-29 09:30:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:30:26,579 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 50 [2020-10-29 09:30:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:26,581 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:30:26,581 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 09:30:26,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:30:26,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 09:30:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2020-10-29 09:30:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 09:30:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2020-10-29 09:30:26,593 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 50 [2020-10-29 09:30:26,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:26,594 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2020-10-29 09:30:26,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:30:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2020-10-29 09:30:26,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:30:26,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:26,595 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:30:26,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:30:26,595 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:26,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2113529926, now seen corresponding path program 1 times [2020-10-29 09:30:26,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:26,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677973527] [2020-10-29 09:30:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:30,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:30,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:30:30,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:30:30,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4243 [2020-10-29 09:30:30,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:30,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 09:30:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 09:30:30,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:31,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:31,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:31,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:31,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:31,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:31,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:30:31,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:31,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:31,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:30:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:31,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:31,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:31,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:30:31,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 09:30:31,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:31,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:30:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:30:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:31,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:31,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:31,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:31,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:30:31,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:31,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:30:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:30:31,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:31,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:31,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:31,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:31,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:30:31,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:31,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:30:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:31,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:30:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:32,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:32,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:30:32,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 09:30:32,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:32,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:30:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:30:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:33,044 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-10-29 09:30:33,390 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-29 09:30:33,862 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 79 [2020-10-29 09:30:34,238 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 09:30:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:34,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:34,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:34,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:34,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 09:30:34,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:34,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:34,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:34,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:34,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:34,926 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-10-29 09:30:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:30:34,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677973527] [2020-10-29 09:30:34,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:34,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 09:30:34,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711757925] [2020-10-29 09:30:34,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 09:30:34,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:34,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 09:30:34,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=751, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:30:34,980 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 29 states. [2020-10-29 09:30:35,727 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-29 09:30:37,087 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-29 09:30:37,644 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-10-29 09:30:39,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:39,040 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2020-10-29 09:30:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:30:39,041 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 52 [2020-10-29 09:30:39,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:39,043 INFO L225 Difference]: With dead ends: 80 [2020-10-29 09:30:39,043 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 09:30:39,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=136, Invalid=1670, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 09:30:39,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 09:30:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-10-29 09:30:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 09:30:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2020-10-29 09:30:39,056 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 52 [2020-10-29 09:30:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:39,056 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2020-10-29 09:30:39,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 09:30:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2020-10-29 09:30:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:30:39,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:39,057 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:30:39,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:30:39,058 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:39,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:39,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1396844848, now seen corresponding path program 2 times [2020-10-29 09:30:39,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:39,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816875808] [2020-10-29 09:30:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:44,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:44,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:30:44,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:30:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:30:44,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:44,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:30:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 09:30:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:44,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:44,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:44,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:44,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:44,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:30:44,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:44,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:44,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:44,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:44,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:44,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:30:44,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:44,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 09:30:44,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:44,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:30:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:30:44,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:44,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:44,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:44,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:44,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:44,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:30:44,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:44,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:30:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:44,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:44,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:44,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:44,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:44,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:30:44,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:44,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:44,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:30:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:44,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:44,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:45,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:45,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:30:45,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:30:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 09:30:45,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:45,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:30:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:30:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:45,479 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-29 09:30:45,644 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-29 09:30:45,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:45,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:45,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:45,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:30:45,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:45,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:30:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:46,067 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-10-29 09:30:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:30:46,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816875808] [2020-10-29 09:30:46,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:46,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:30:46,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78514616] [2020-10-29 09:30:46,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:30:46,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:46,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:30:46,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:30:46,092 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand 24 states. [2020-10-29 09:30:47,519 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-29 09:30:47,835 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-29 09:30:48,116 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-29 09:30:48,560 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2020-10-29 09:30:48,870 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-29 09:30:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:49,418 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2020-10-29 09:30:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:30:49,419 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 52 [2020-10-29 09:30:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:49,421 INFO L225 Difference]: With dead ends: 81 [2020-10-29 09:30:49,421 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 09:30:49,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:30:49,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 09:30:49,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-29 09:30:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 09:30:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-10-29 09:30:49,433 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 52 [2020-10-29 09:30:49,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:49,433 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-10-29 09:30:49,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:30:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-10-29 09:30:49,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:30:49,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:49,434 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-29 09:30:49,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:30:49,435 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:49,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:49,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1302705369, now seen corresponding path program 2 times [2020-10-29 09:30:49,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:49,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676093489] [2020-10-29 09:30:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:51,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:54,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:54,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 09:30:54,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:30:54,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:30:54,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:54,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:54,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 09:30:54,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:30:54,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 09:30:54,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:54,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:30:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:54,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:54,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:30:54,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:30:54,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:54,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:30:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:30:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:30:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:54,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:54,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:30:54,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 09:30:54,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:54,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:30:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:30:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:54,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:54,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:54,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:54,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:54,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:30:54,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:54,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:30:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:30:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:30:54,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:55,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:30:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:55,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:55,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:55,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:55,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:30:55,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:55,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:55,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:55,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:30:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:55,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:55,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:55,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:55,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:30:55,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:55,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:30:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:55,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:30:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:55,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:55,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:30:55,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:55,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 09:30:55,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:55,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:55,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:30:55,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:55,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:30:55,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:55,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:30:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:55,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:30:55,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:30:55,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:30:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 09:30:55,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:30:55,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:30:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:30:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:30:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:30:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:30:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:30:56,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676093489] [2020-10-29 09:30:56,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:30:56,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 09:30:56,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752424636] [2020-10-29 09:30:56,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 09:30:56,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:30:56,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 09:30:56,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:30:56,032 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 27 states. [2020-10-29 09:30:56,623 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-29 09:30:57,475 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-29 09:30:57,812 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-29 09:30:58,070 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-29 09:30:58,321 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-29 09:30:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:30:58,595 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-10-29 09:30:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:30:58,596 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 58 [2020-10-29 09:30:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:30:58,597 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:30:58,597 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 09:30:58,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:30:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 09:30:58,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-29 09:30:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 09:30:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-10-29 09:30:58,608 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 58 [2020-10-29 09:30:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:30:58,608 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-10-29 09:30:58,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 09:30:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-10-29 09:30:58,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:30:58,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:30:58,609 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-29 09:30:58,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:30:58,610 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:30:58,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:30:58,610 INFO L82 PathProgramCache]: Analyzing trace with hash 586020291, now seen corresponding path program 3 times [2020-10-29 09:30:58,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:30:58,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520572179] [2020-10-29 09:30:58,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:30:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:30:58,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:30:58,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:03,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:03,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 09:31:03,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:31:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:31:03,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:03,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:31:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 09:31:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:03,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:03,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:03,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:03,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:31:03,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:03,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:03,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:03,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:03,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:03,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:31:03,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:03,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 09:31:03,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:03,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:31:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:31:03,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:04,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:04,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:04,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:04,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:31:04,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:04,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:04,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:31:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:04,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:04,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:04,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:04,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:04,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:31:04,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:04,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:31:04,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:31:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:04,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:04,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:04,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:04,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:04,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:31:04,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:04,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:31:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:31:04,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:04,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:31:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:04,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:04,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:31:04,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:04,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-29 09:31:04,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:04,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:31:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:31:04,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:05,201 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2020-10-29 09:31:06,425 WARN L193 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 97 [2020-10-29 09:31:07,102 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2020-10-29 09:31:07,940 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2020-10-29 09:31:08,499 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 65 [2020-10-29 09:31:08,686 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-29 09:31:08,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:08,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:08,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:08,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 09:31:08,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:08,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:31:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:10,421 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 197 DAG size of output: 80 [2020-10-29 09:31:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 09:31:10,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520572179] [2020-10-29 09:31:10,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:10,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:31:10,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587282476] [2020-10-29 09:31:10,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:31:10,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:10,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:31:10,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:31:10,928 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 24 states. [2020-10-29 09:31:11,587 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-29 09:31:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:13,572 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2020-10-29 09:31:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:31:13,573 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2020-10-29 09:31:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:13,574 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:31:13,574 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 09:31:13,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:31:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 09:31:13,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-10-29 09:31:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 09:31:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-10-29 09:31:13,586 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 58 [2020-10-29 09:31:13,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:13,586 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-10-29 09:31:13,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:31:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-10-29 09:31:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:31:13,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:13,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:13,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:31:13,587 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:13,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:13,588 INFO L82 PathProgramCache]: Analyzing trace with hash -978772314, now seen corresponding path program 1 times [2020-10-29 09:31:13,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:13,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163267474] [2020-10-29 09:31:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:18,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:18,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:18,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:31:18,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:31:18,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 09:31:18,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:18,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:31:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 09:31:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:19,347 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 31 [2020-10-29 09:31:19,622 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 38 [2020-10-29 09:31:19,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:19,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:19,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:19,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:19,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:31:19,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:19,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:19,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:19,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:19,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:19,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:31:19,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:31:19,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:19,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:31:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:31:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:19,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:19,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:19,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:19,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:19,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:31:19,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:19,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:19,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:19,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:31:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:19,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:19,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:19,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:19,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:19,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:31:19,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:19,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:19,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:19,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:19,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:19,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:19,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:31:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:20,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:20,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:31:20,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:20,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 09:31:20,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:20,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:31:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:31:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:20,361 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 17 [2020-10-29 09:31:20,803 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 30 [2020-10-29 09:31:21,277 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 29 [2020-10-29 09:31:21,597 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-10-29 09:31:21,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:21,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:21,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:21,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:21,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:31:21,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:21,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:31:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:31:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 09:31:21,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163267474] [2020-10-29 09:31:21,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:21,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:31:21,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887655186] [2020-10-29 09:31:21,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:31:21,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:21,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:31:21,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:31:21,632 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 17 states. [2020-10-29 09:31:22,731 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-29 09:31:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:23,136 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2020-10-29 09:31:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:31:23,137 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-10-29 09:31:23,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:23,138 INFO L225 Difference]: With dead ends: 84 [2020-10-29 09:31:23,138 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 09:31:23,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:31:23,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 09:31:23,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2020-10-29 09:31:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:31:23,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2020-10-29 09:31:23,149 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 55 [2020-10-29 09:31:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:23,150 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2020-10-29 09:31:23,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:31:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2020-10-29 09:31:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:31:23,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:23,151 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-29 09:31:23,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:31:23,151 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:23,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:23,152 INFO L82 PathProgramCache]: Analyzing trace with hash 488244862, now seen corresponding path program 2 times [2020-10-29 09:31:23,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:23,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112652172] [2020-10-29 09:31:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:26,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:28,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:28,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 09:31:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:31:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 09:31:28,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:28,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 09:31:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 09:31:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:28,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:28,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:28,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:28,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:28,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:31:28,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:28,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:28,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:28,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:28,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:28,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:31:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 09:31:28,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:28,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:31:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:31:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:28,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:29,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:29,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:29,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:29,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:29,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:31:29,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:29,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:29,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:31:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:31:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:29,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:29,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:29,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:29,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 09:31:29,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:29,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:29,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:31:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:29,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:29,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:29,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:29,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:29,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 09:31:29,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:29,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:29,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:29,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:31:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:29,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:29,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:29,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:31:29,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 09:31:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:29,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:31:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:31:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:30,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:30,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:30,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:30,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:30,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:31:30,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:30,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:31:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:31,032 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-10-29 09:31:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:31:31,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112652172] [2020-10-29 09:31:31,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:31,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 09:31:31,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824098423] [2020-10-29 09:31:31,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 09:31:31,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:31,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 09:31:31,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:31:31,060 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand 28 states. [2020-10-29 09:31:31,844 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-29 09:31:32,959 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-29 09:31:33,371 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-29 09:31:33,876 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-29 09:31:34,302 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-29 09:31:34,681 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-10-29 09:31:35,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:35,424 INFO L93 Difference]: Finished difference Result 82 states and 95 transitions. [2020-10-29 09:31:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:31:35,424 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2020-10-29 09:31:35,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:35,426 INFO L225 Difference]: With dead ends: 82 [2020-10-29 09:31:35,426 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 09:31:35,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:31:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 09:31:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-10-29 09:31:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 09:31:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-10-29 09:31:35,437 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 60 [2020-10-29 09:31:35,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:35,437 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-10-29 09:31:35,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 09:31:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-10-29 09:31:35,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:31:35,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:35,438 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-29 09:31:35,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:31:35,439 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:35,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:35,439 INFO L82 PathProgramCache]: Analyzing trace with hash -228440216, now seen corresponding path program 4 times [2020-10-29 09:31:35,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:35,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606576912] [2020-10-29 09:31:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:35,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:35,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:38,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:38,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 09:31:38,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:31:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2856 [2020-10-29 09:31:38,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:38,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 09:31:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 09:31:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:38,567 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-29 09:31:38,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:38,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:38,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:38,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:31:38,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:38,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:38,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:38,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:38,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:38,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:31:38,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:38,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 09:31:38,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:38,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:31:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:31:38,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:39,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:39,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:39,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:31:39,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:39,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:31:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:31:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:39,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:39,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:39,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:31:39,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:39,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:31:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:31:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:39,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:31:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:39,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:39,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:39,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:39,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:31:39,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:39,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:39,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:31:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:39,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:39,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:39,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:31:39,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-29 09:31:39,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:39,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:31:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:31:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:40,303 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-29 09:31:40,660 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-29 09:31:41,088 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-29 09:31:41,526 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2020-10-29 09:31:42,115 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 84 [2020-10-29 09:31:42,355 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-29 09:31:42,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:42,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:42,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:42,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 09:31:42,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:42,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:31:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:42,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:42,836 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-29 09:31:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:31:42,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606576912] [2020-10-29 09:31:42,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:42,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 09:31:42,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616548425] [2020-10-29 09:31:42,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 09:31:42,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:42,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 09:31:42,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=855, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:31:42,880 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 31 states. [2020-10-29 09:31:43,451 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-29 09:31:44,417 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-29 09:31:44,972 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2020-10-29 09:31:45,609 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 112 [2020-10-29 09:31:46,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:46,682 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2020-10-29 09:31:46,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:31:46,683 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2020-10-29 09:31:46,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:46,684 INFO L225 Difference]: With dead ends: 83 [2020-10-29 09:31:46,684 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 09:31:46,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=127, Invalid=1513, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 09:31:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 09:31:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2020-10-29 09:31:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 09:31:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-10-29 09:31:46,696 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 60 [2020-10-29 09:31:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:46,697 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-10-29 09:31:46,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 09:31:46,697 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-10-29 09:31:46,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 09:31:46,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:46,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:46,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:31:46,698 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:46,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:46,699 INFO L82 PathProgramCache]: Analyzing trace with hash -239380324, now seen corresponding path program 1 times [2020-10-29 09:31:46,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:46,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380981429] [2020-10-29 09:31:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:50,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:50,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 09:31:50,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:31:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3452 [2020-10-29 09:31:50,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:50,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 09:31:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 09:31:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:50,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:50,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:50,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:50,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:50,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:50,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:31:50,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:50,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:50,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:50,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:50,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:50,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:50,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:50,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:50,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:31:50,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 09:31:50,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:50,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:31:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:31:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:50,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:51,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:51,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:51,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:51,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:31:51,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:51,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:31:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:31:51,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:31:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:51,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:51,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:51,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:51,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:51,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:31:51,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:51,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:51,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:51,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:31:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:51,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:51,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:31:51,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:51,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 09:31:51,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:51,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:31:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:31:51,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:52,142 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-29 09:31:52,670 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-10-29 09:31:53,666 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 91 [2020-10-29 09:31:54,683 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 116 [2020-10-29 09:31:55,970 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 114 [2020-10-29 09:31:55,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:55,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:56,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:56,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:56,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:56,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 09:31:56,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:56,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:31:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:56,560 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-29 09:31:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:31:56,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380981429] [2020-10-29 09:31:56,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:56,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 09:31:56,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479499230] [2020-10-29 09:31:56,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 09:31:56,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:56,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 09:31:56,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=810, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:31:56,639 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 30 states. [2020-10-29 09:31:57,652 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-29 09:31:59,692 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-10-29 09:32:00,571 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 107 [2020-10-29 09:32:02,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:02,273 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2020-10-29 09:32:02,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:32:02,273 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2020-10-29 09:32:02,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:02,275 INFO L225 Difference]: With dead ends: 86 [2020-10-29 09:32:02,275 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 09:32:02,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=149, Invalid=2013, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 09:32:02,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 09:32:02,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-10-29 09:32:02,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 09:32:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2020-10-29 09:32:02,291 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 56 [2020-10-29 09:32:02,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:02,291 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2020-10-29 09:32:02,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 09:32:02,291 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2020-10-29 09:32:02,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 09:32:02,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:02,292 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-29 09:32:02,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:32:02,292 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:02,293 INFO L82 PathProgramCache]: Analyzing trace with hash -524254493, now seen corresponding path program 3 times [2020-10-29 09:32:02,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:02,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060476310] [2020-10-29 09:32:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:02,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:03,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:06,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:06,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 09:32:06,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:32:06,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4500 [2020-10-29 09:32:06,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:06,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:06,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 09:32:06,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:06,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 09:32:06,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:07,034 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-29 09:32:07,216 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-29 09:32:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:07,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:07,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:07,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:07,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:07,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:07,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:07,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:07,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:07,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:32:07,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-29 09:32:07,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:07,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:32:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:32:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:08,255 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-29 09:32:08,471 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-10-29 09:32:08,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:08,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:32:08,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:32:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:08,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:08,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:32:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:08,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:08,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:08,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:32:08,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:32:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:08,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:08,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:32:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:08,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:32:08,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:32:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:32:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:09,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:09,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:09,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:32:09,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-29 09:32:09,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:09,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:32:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:32:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,988 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-10-29 09:32:10,419 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2020-10-29 09:32:11,061 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2020-10-29 09:32:11,654 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-29 09:32:13,168 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 191 DAG size of output: 105 [2020-10-29 09:32:14,504 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 196 DAG size of output: 113 [2020-10-29 09:32:16,098 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 189 DAG size of output: 101 [2020-10-29 09:32:17,408 WARN L193 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 134 [2020-10-29 09:32:17,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:17,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:17,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:17,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:17,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 09:32:17,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:17,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-29 09:32:17,981 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-29 09:32:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:32:18,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060476310] [2020-10-29 09:32:18,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:18,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 09:32:18,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405846069] [2020-10-29 09:32:18,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 09:32:18,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:18,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 09:32:18,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:32:18,040 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand 36 states. [2020-10-29 09:32:19,354 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-29 09:32:19,705 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-10-29 09:32:19,967 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-29 09:32:20,205 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-29 09:32:21,252 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 103 [2020-10-29 09:32:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:22,949 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2020-10-29 09:32:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 09:32:22,949 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 62 [2020-10-29 09:32:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:22,950 INFO L225 Difference]: With dead ends: 86 [2020-10-29 09:32:22,950 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 09:32:22,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=176, Invalid=2374, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 09:32:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 09:32:22,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-10-29 09:32:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 09:32:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2020-10-29 09:32:22,962 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 62 [2020-10-29 09:32:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:22,962 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2020-10-29 09:32:22,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 09:32:22,962 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2020-10-29 09:32:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 09:32:22,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:22,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-10-29 09:32:22,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:32:22,963 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:22,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1240939571, now seen corresponding path program 5 times [2020-10-29 09:32:22,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:22,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651276453] [2020-10-29 09:32:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:22,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:23,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:26,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:27,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:27,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 09:32:27,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:32:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 09:32:27,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:27,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 09:32:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:32:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:28,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:28,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:28,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:28,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:28,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:32:28,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:28,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:28,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:28,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:28,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:32:28,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-29 09:32:28,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:28,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:32:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:32:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:28,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:28,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:29,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:29,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:29,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:32:29,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:29,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:32:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:32:29,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:32:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:29,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:29,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:29,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:32:29,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:29,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:29,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:29,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:29,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:29,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:32:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:29,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:29,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:29,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:29,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:29,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:32:29,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:29,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:29,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:32:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:29,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:29,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:32:29,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:32:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-29 09:32:29,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:29,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:32:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:32:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:30,218 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-29 09:32:30,444 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-29 09:32:30,738 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-29 09:32:30,991 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-29 09:32:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:31,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:31,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:31,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:32:31,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:31,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:31,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:31,573 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-29 09:32:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 33 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:32:31,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651276453] [2020-10-29 09:32:31,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:31,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 09:32:31,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746256556] [2020-10-29 09:32:31,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 09:32:31,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:31,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 09:32:31,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:32:31,609 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand 29 states. [2020-10-29 09:32:32,518 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-29 09:32:33,548 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-29 09:32:34,037 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-29 09:32:34,503 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-29 09:32:34,917 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-10-29 09:32:35,529 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 99 [2020-10-29 09:32:35,955 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-29 09:32:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:36,757 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2020-10-29 09:32:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:32:36,758 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 62 [2020-10-29 09:32:36,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:36,760 INFO L225 Difference]: With dead ends: 95 [2020-10-29 09:32:36,760 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 09:32:36,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=157, Invalid=1735, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:32:36,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 09:32:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-29 09:32:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 09:32:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2020-10-29 09:32:36,774 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 62 [2020-10-29 09:32:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:36,774 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2020-10-29 09:32:36,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 09:32:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2020-10-29 09:32:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 09:32:36,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:36,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1] [2020-10-29 09:32:36,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:32:36,776 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:36,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1633207952, now seen corresponding path program 1 times [2020-10-29 09:32:36,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:36,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184684427] [2020-10-29 09:32:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:36,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:37,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:37,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 09:32:37,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:37,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-29 09:32:37,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:37,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:32:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 09:32:37,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:37,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:37,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:37,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:37,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:37,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:37,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:32:37,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:37,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:37,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:37,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:37,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:37,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:37,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:32:37,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 09:32:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:37,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:32:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:32:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:37,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:37,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:37,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:37,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:37,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:37,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:37,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:37,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:37,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:37,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:37,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:37,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:37,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:32:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:37,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:37,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:37,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:37,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:32:37,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:37,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:37,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:37,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:32:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:37,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:37,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:32:37,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:32:37,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:37,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:32:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:32:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:37,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:37,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:37,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:37,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:37,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:37,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:32:37,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184684427] [2020-10-29 09:32:37,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:37,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:32:37,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917294523] [2020-10-29 09:32:37,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:32:37,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:37,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:32:37,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:32:37,487 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand 8 states. [2020-10-29 09:32:37,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:37,832 INFO L93 Difference]: Finished difference Result 103 states and 120 transitions. [2020-10-29 09:32:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:32:37,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-29 09:32:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:37,834 INFO L225 Difference]: With dead ends: 103 [2020-10-29 09:32:37,834 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 09:32:37,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:32:37,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 09:32:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-10-29 09:32:37,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 09:32:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-10-29 09:32:37,852 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 59 [2020-10-29 09:32:37,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:37,852 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-10-29 09:32:37,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:32:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-10-29 09:32:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:32:37,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:37,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1] [2020-10-29 09:32:37,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 09:32:37,854 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:37,855 INFO L82 PathProgramCache]: Analyzing trace with hash -872370702, now seen corresponding path program 2 times [2020-10-29 09:32:37,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:37,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196417095] [2020-10-29 09:32:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:37,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:38,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:42,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:42,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 09:32:42,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:32:42,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 09:32:42,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:42,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:42,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:32:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:42,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 09:32:42,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:44,391 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 247 DAG size of output: 31 [2020-10-29 09:32:45,373 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 40 [2020-10-29 09:32:45,758 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 30 [2020-10-29 09:32:45,960 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 26 [2020-10-29 09:32:46,163 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 23 [2020-10-29 09:32:46,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:46,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:46,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:46,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:46,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:46,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:46,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:46,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:46,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:46,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:46,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:46,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:46,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:32:46,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:32:46,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:46,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:32:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:32:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:46,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:46,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:46,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:46,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:46,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:46,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:46,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:46,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:46,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:32:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:46,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:46,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:46,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:46,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:32:46,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:46,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:46,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:32:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:46,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:46,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:46,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:32:46,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:46,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-29 09:32:46,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:46,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:32:46,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:47,546 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 18 [2020-10-29 09:32:48,098 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 30 [2020-10-29 09:32:49,553 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 163 DAG size of output: 28 [2020-10-29 09:32:50,749 WARN L193 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 23 [2020-10-29 09:32:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:50,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:50,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:50,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:32:50,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:50,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:32:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 09:32:50,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196417095] [2020-10-29 09:32:50,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:50,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:32:50,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228413402] [2020-10-29 09:32:50,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:32:50,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:50,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:32:50,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:32:50,778 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 18 states. [2020-10-29 09:32:51,604 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-29 09:32:52,057 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-29 09:32:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:52,405 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2020-10-29 09:32:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:32:52,409 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2020-10-29 09:32:52,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:52,411 INFO L225 Difference]: With dead ends: 104 [2020-10-29 09:32:52,411 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 09:32:52,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:32:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 09:32:52,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-29 09:32:52,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 09:32:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2020-10-29 09:32:52,425 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 60 [2020-10-29 09:32:52,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:52,425 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2020-10-29 09:32:52,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:32:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2020-10-29 09:32:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 09:32:52,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:52,426 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-29 09:32:52,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 09:32:52,427 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:52,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:52,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1802216169, now seen corresponding path program 2 times [2020-10-29 09:32:52,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:52,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030250277] [2020-10-29 09:32:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:52,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:53,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:55,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:57,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:57,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 09:32:57,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:32:57,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:32:57,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:57,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 09:32:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 09:32:57,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:57,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:57,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:57,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:57,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:57,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:32:57,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:57,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:57,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:57,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:57,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:57,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:32:57,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:57,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 09:32:57,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:57,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:32:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:57,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:32:57,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:58,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:58,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:58,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:58,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:32:58,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:58,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:32:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:58,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:32:58,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:58,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:32:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:32:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:58,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:32:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:58,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:58,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:58,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:32:58,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:58,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:32:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:58,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 09:32:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:58,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:58,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:58,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:32:58,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:58,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-29 09:32:58,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:58,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:32:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:32:58,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:59,392 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-29 09:32:59,665 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-29 09:33:00,448 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2020-10-29 09:33:01,333 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2020-10-29 09:33:02,194 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 74 [2020-10-29 09:33:03,092 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2020-10-29 09:33:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:33:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:03,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:03,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:33:03,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:33:03,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:03,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:33:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:33:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:33:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:33:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:33:03,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030250277] [2020-10-29 09:33:03,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:33:03,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 09:33:03,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256807845] [2020-10-29 09:33:03,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 09:33:03,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:33:03,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 09:33:03,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=863, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:33:03,528 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand 31 states. [2020-10-29 09:33:04,319 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-29 09:33:05,697 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-10-29 09:33:06,220 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73