/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:47,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:47,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:47,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:47,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:47,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:47,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:47,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:47,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:47,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:47,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:47,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:47,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:47,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:47,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:47,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:47,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:47,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:47,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:47,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:47,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:47,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:47,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:47,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:47,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:47,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:47,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:47,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:47,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:47,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:47,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:47,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:47,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:47,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:47,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:47,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:47,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:47,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:47,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:47,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:47,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:47,745 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 [2020-09-25 10:05:47,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:47,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:47,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:47,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:47,771 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:47,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:47,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:47,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:47,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:47,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:47,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:47,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:47,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:47,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:47,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:47,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:47,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:47,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:47,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:47,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:47,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:47,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:47,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:47,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:47,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:47,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:47,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:47,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:47,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:47,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=true; [2020-09-25 10:05:48,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:48,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:48,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:48,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:48,256 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:48,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 10:05:48,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/055d98f09/c3efc3a21cf34f209a539ccb74764d3f/FLAGbffee1897 [2020-09-25 10:05:48,958 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:48,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 10:05:48,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/055d98f09/c3efc3a21cf34f209a539ccb74764d3f/FLAGbffee1897 [2020-09-25 10:05:49,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/055d98f09/c3efc3a21cf34f209a539ccb74764d3f [2020-09-25 10:05:49,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:49,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:49,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:49,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:49,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:49,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:49" (1/1) ... [2020-09-25 10:05:49,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3a7124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:49, skipping insertion in model container [2020-09-25 10:05:49,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:49" (1/1) ... [2020-09-25 10:05:49,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:49,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:49,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:49,886 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:49,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:50,007 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:50,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:50 WrapperNode [2020-09-25 10:05:50,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:50,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:50,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:50,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:50,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:50" (1/1) ... [2020-09-25 10:05:50,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:50" (1/1) ... [2020-09-25 10:05:50,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:50" (1/1) ... [2020-09-25 10:05:50,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:50" (1/1) ... [2020-09-25 10:05:50,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:50" (1/1) ... [2020-09-25 10:05:50,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:50" (1/1) ... [2020-09-25 10:05:50,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:50" (1/1) ... [2020-09-25 10:05:50,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:50,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:50,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:50,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:50,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:50,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:50,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:50,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 10:05:50,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 10:05:50,158 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 10:05:50,158 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 10:05:50,159 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 10:05:50,159 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 10:05:50,159 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-25 10:05:50,159 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-25 10:05:50,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:05:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 10:05:50,160 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 10:05:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:50,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:50,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:50,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:50,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:50,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:50,165 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:50,165 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:50,165 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:50,165 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:50,165 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:50,170 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:50,170 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:50,170 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:50,170 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:50,170 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:50,170 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 10:05:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 10:05:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 10:05:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 10:05:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-25 10:05:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-25 10:05:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 10:05:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 10:05:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:50,536 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 10:05:50,816 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:50,817 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 10:05:50,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:50 BoogieIcfgContainer [2020-09-25 10:05:50,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:50,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:50,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:50,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:50,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:49" (1/3) ... [2020-09-25 10:05:50,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501b5c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:50, skipping insertion in model container [2020-09-25 10:05:50,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:50" (2/3) ... [2020-09-25 10:05:50,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501b5c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:50, skipping insertion in model container [2020-09-25 10:05:50,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:50" (3/3) ... [2020-09-25 10:05:50,834 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-25 10:05:50,846 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:50,857 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:05:50,881 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:05:50,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:50,923 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:50,923 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:50,923 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:50,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:50,924 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:50,924 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:50,924 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:50,957 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-09-25 10:05:50,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 10:05:50,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:50,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:50,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:50,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:50,985 INFO L82 PathProgramCache]: Analyzing trace with hash 422432984, now seen corresponding path program 1 times [2020-09-25 10:05:50,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:50,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360768186] [2020-09-25 10:05:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 10:05:51,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:05:51,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-25 10:05:51,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:05:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:05:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:51,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:05:51,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:51,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:05:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:51,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:51,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:05:51,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 10:05:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:51,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:51,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 10:05:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:05:51,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:05:51,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 10:05:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:05:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:05:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:51,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:05:51,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 10:05:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:51,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 10:05:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:05:51,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:05:51,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 10:05:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 10:05:51,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360768186] [2020-09-25 10:05:51,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:51,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 10:05:51,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257763455] [2020-09-25 10:05:51,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:05:51,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:51,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:05:51,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:05:51,861 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-09-25 10:05:52,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:52,208 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2020-09-25 10:05:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:05:52,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 10:05:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:52,226 INFO L225 Difference]: With dead ends: 289 [2020-09-25 10:05:52,226 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 10:05:52,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:05:52,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 10:05:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-09-25 10:05:52,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 10:05:52,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 10:05:52,297 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 54 [2020-09-25 10:05:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:52,298 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 10:05:52,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:05:52,298 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 10:05:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 10:05:52,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:52,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:52,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:52,304 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash 333013349, now seen corresponding path program 1 times [2020-09-25 10:05:52,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:52,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115796991] [2020-09-25 10:05:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:52,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:57,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 10:05:57,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:05:57,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:05:57,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:57,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:05:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:05:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:05:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:57,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:57,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:57,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:57,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:57,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:05:57,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:57,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:57,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:05:57,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:05:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:05:57,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:05:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-25 10:05:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:57,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:05:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:05:57,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:05:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:57,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:58,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:05:58,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:58,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 10:05:58,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:58,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:05:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:05:58,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:58,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 10:05:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:58,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:58,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:05:58,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:05:58,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 10:05:58,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:58,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:05:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:05:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:05:58,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 10:05:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:58,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:58,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:05:58,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:58,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:58,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 10:05:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:58,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115796991] [2020-09-25 10:05:58,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:58,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 10:05:58,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124157430] [2020-09-25 10:05:58,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 10:05:58,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:58,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 10:05:58,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:05:58,398 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 18 states. [2020-09-25 10:05:59,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:59,716 INFO L93 Difference]: Finished difference Result 305 states and 347 transitions. [2020-09-25 10:05:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:05:59,716 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-09-25 10:05:59,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:59,720 INFO L225 Difference]: With dead ends: 305 [2020-09-25 10:05:59,720 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 10:05:59,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=184, Invalid=808, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:05:59,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 10:05:59,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 147. [2020-09-25 10:05:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-09-25 10:05:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 166 transitions. [2020-09-25 10:05:59,746 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 166 transitions. Word has length 69 [2020-09-25 10:05:59,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:59,747 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 166 transitions. [2020-09-25 10:05:59,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 10:05:59,747 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 166 transitions. [2020-09-25 10:05:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 10:05:59,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:59,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:59,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:59,751 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:59,752 INFO L82 PathProgramCache]: Analyzing trace with hash 454377439, now seen corresponding path program 1 times [2020-09-25 10:05:59,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:59,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713177755] [2020-09-25 10:05:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:59,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:06:02,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:02,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2266 [2020-09-25 10:06:02,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:06:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:06:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:06:02,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:02,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:02,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:02,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:06:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:02,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 10:06:02,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:02,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:06:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:06:02,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:06:02,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:06:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:06:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:06:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 10:06:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:02,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:02,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:06:02,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:06:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:02,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 10:06:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:06:02,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:02,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:06:02,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:02,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 10:06:02,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:02,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:02,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713177755] [2020-09-25 10:06:02,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:02,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:06:02,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095469619] [2020-09-25 10:06:02,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:06:02,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:02,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:06:02,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:06:02,338 INFO L87 Difference]: Start difference. First operand 147 states and 166 transitions. Second operand 12 states. [2020-09-25 10:06:03,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:03,110 INFO L93 Difference]: Finished difference Result 310 states and 352 transitions. [2020-09-25 10:06:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:06:03,110 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-09-25 10:06:03,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:03,113 INFO L225 Difference]: With dead ends: 310 [2020-09-25 10:06:03,113 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 10:06:03,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:06:03,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 10:06:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 154. [2020-09-25 10:06:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 10:06:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2020-09-25 10:06:03,151 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 73 [2020-09-25 10:06:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:03,152 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2020-09-25 10:06:03,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:06:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2020-09-25 10:06:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 10:06:03,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:03,162 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:03,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:06:03,163 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:03,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:03,163 INFO L82 PathProgramCache]: Analyzing trace with hash -472966004, now seen corresponding path program 1 times [2020-09-25 10:06:03,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:03,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517011486] [2020-09-25 10:06:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:04,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:04,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:06,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:08,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 10:06:08,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-09-25 10:06:08,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:06:08,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:08,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:06:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:06:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 10:06:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:08,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:08,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:08,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:08,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:08,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:08,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:06:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:08,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:08,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:06:08,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-25 10:06:08,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:08,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:06:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:06:08,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:09,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 10:06:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:06:09,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 10:06:09,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:06:09,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:09,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:06:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:09,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:06:09,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 10:06:09,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:06:09,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:06:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:06:09,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:09,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 10:06:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:09,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:06:09,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:09,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:09,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 10:06:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:09,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:06:09,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517011486] [2020-09-25 10:06:09,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:09,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:06:09,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002011977] [2020-09-25 10:06:09,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:06:09,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:09,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:06:09,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:06:09,416 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand 19 states. [2020-09-25 10:06:11,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:11,761 INFO L93 Difference]: Finished difference Result 388 states and 461 transitions. [2020-09-25 10:06:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 10:06:11,761 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 79 [2020-09-25 10:06:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:11,766 INFO L225 Difference]: With dead ends: 388 [2020-09-25 10:06:11,766 INFO L226 Difference]: Without dead ends: 280 [2020-09-25 10:06:11,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=337, Invalid=1643, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 10:06:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-25 10:06:11,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 174. [2020-09-25 10:06:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 10:06:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 203 transitions. [2020-09-25 10:06:11,798 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 203 transitions. Word has length 79 [2020-09-25 10:06:11,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:11,799 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 203 transitions. [2020-09-25 10:06:11,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:06:11,799 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 203 transitions. [2020-09-25 10:06:11,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 10:06:11,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:11,803 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:11,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:06:11,804 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:11,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1660389815, now seen corresponding path program 2 times [2020-09-25 10:06:11,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:11,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353323907] [2020-09-25 10:06:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:16,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 10:06:16,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:06:16,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:16,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:06:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:06:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:06:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:16,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:16,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:16,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:16,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:16,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:16,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:06:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:16,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:17,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:17,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:06:17,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-09-25 10:06:17,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:17,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:17,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:06:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:06:17,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:17,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 10:06:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:17,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:17,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:06:17,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:06:17,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:17,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:06:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:06:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:06:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:17,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:06:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:17,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:17,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:17,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:06:17,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:17,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:17,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:17,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:06:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:17,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:17,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 10:06:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:17,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:17,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:06:17,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:17,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:17,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:17,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:17,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 10:06:17,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:17,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 10:06:17,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353323907] [2020-09-25 10:06:17,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:17,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:06:17,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548485356] [2020-09-25 10:06:17,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:06:17,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:17,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:06:17,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:06:17,484 INFO L87 Difference]: Start difference. First operand 174 states and 203 transitions. Second operand 13 states. [2020-09-25 10:06:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:18,461 INFO L93 Difference]: Finished difference Result 342 states and 395 transitions. [2020-09-25 10:06:18,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:06:18,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 10:06:18,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:18,465 INFO L225 Difference]: With dead ends: 342 [2020-09-25 10:06:18,465 INFO L226 Difference]: Without dead ends: 219 [2020-09-25 10:06:18,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:06:18,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-25 10:06:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 174. [2020-09-25 10:06:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 10:06:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 202 transitions. [2020-09-25 10:06:18,480 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 202 transitions. Word has length 81 [2020-09-25 10:06:18,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:18,481 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 202 transitions. [2020-09-25 10:06:18,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:06:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 202 transitions. [2020-09-25 10:06:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 10:06:18,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:18,484 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:18,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:06:18,485 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:18,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:18,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1107353865, now seen corresponding path program 3 times [2020-09-25 10:06:18,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:18,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982852932] [2020-09-25 10:06:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:18,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 10:06:23,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:06:23,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:06:23,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:06:23,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 10:06:23,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:23,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:23,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:23,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:23,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:23,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:06:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:06:23,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:23,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 10:06:23,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:06:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:06:23,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:23,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 10:06:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:06:23,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:23,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 10:06:23,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:06:23,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 10:06:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:24,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:24,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:06:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 10:06:24,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:24,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:06:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:06:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:06:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:24,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 10:06:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:24,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:24,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:06:24,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:24,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:24,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:24,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 10:06:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:24,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982852932] [2020-09-25 10:06:24,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:24,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 10:06:24,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987615673] [2020-09-25 10:06:24,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 10:06:24,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:24,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 10:06:24,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:06:24,193 INFO L87 Difference]: Start difference. First operand 174 states and 202 transitions. Second operand 20 states. [2020-09-25 10:06:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:26,313 INFO L93 Difference]: Finished difference Result 371 states and 422 transitions. [2020-09-25 10:06:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 10:06:26,314 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 81 [2020-09-25 10:06:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:26,317 INFO L225 Difference]: With dead ends: 371 [2020-09-25 10:06:26,318 INFO L226 Difference]: Without dead ends: 257 [2020-09-25 10:06:26,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=317, Invalid=1405, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 10:06:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-25 10:06:26,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 197. [2020-09-25 10:06:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-25 10:06:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 220 transitions. [2020-09-25 10:06:26,335 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 220 transitions. Word has length 81 [2020-09-25 10:06:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:26,336 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 220 transitions. [2020-09-25 10:06:26,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 10:06:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 220 transitions. [2020-09-25 10:06:26,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 10:06:26,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:26,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:26,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:06:26,344 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:26,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:26,345 INFO L82 PathProgramCache]: Analyzing trace with hash 27846035, now seen corresponding path program 1 times [2020-09-25 10:06:26,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:26,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951364732] [2020-09-25 10:06:26,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:31,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 10:06:31,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:06:31,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:06:31,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:31,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 10:06:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 10:06:31,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:31,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:31,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:31,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:31,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:31,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:31,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:31,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:31,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:31,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:06:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:31,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:31,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:31,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:31,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:06:31,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:31,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:31,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:06:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:31,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 10:06:31,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:31,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 10:06:31,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:31,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:06:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:06:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:06:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:31,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:31,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:31,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:06:31,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:31,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:31,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:31,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:06:31,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 10:06:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:31,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:06:31,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:31,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:06:31,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:31,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:06:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:06:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 10:06:31,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951364732] [2020-09-25 10:06:31,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:31,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 10:06:31,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314570894] [2020-09-25 10:06:31,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:06:31,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:31,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:06:31,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:06:31,943 INFO L87 Difference]: Start difference. First operand 197 states and 220 transitions. Second operand 12 states. [2020-09-25 10:06:32,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:32,856 INFO L93 Difference]: Finished difference Result 247 states and 279 transitions. [2020-09-25 10:06:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:06:32,857 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-09-25 10:06:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:32,861 INFO L225 Difference]: With dead ends: 247 [2020-09-25 10:06:32,861 INFO L226 Difference]: Without dead ends: 241 [2020-09-25 10:06:32,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:06:32,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-25 10:06:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 217. [2020-09-25 10:06:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-25 10:06:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 246 transitions. [2020-09-25 10:06:32,876 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 246 transitions. Word has length 82 [2020-09-25 10:06:32,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:32,877 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 246 transitions. [2020-09-25 10:06:32,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:06:32,877 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 246 transitions. [2020-09-25 10:06:32,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 10:06:32,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:32,879 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:32,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:06:32,879 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:32,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:32,880 INFO L82 PathProgramCache]: Analyzing trace with hash 903548806, now seen corresponding path program 1 times [2020-09-25 10:06:32,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:32,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282350490] [2020-09-25 10:06:32,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:35,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 10:06:35,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:35,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2445 [2020-09-25 10:06:35,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:35,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:06:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:06:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 10:06:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:35,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:35,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:35,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:35,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:35,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:35,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:35,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:35,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 10:06:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:35,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:35,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:06:35,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:35,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 10:06:35,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:35,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:06:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:06:35,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:35,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 10:06:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:35,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:35,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:06:35,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:06:35,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:35,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:06:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:06:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:06:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:35,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 10:06:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:35,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:35,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:06:35,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:35,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:06:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:35,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:35,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 10:06:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:35,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:35,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:06:35,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:35,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:06:35,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:35,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 10:06:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:35,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:35,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282350490] [2020-09-25 10:06:35,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:35,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:06:35,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046179993] [2020-09-25 10:06:35,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:06:35,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:35,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:06:35,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:06:35,640 INFO L87 Difference]: Start difference. First operand 217 states and 246 transitions. Second operand 14 states. [2020-09-25 10:06:36,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:36,849 INFO L93 Difference]: Finished difference Result 392 states and 451 transitions. [2020-09-25 10:06:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:06:36,849 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-09-25 10:06:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:36,852 INFO L225 Difference]: With dead ends: 392 [2020-09-25 10:06:36,852 INFO L226 Difference]: Without dead ends: 275 [2020-09-25 10:06:36,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:06:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-25 10:06:36,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 193. [2020-09-25 10:06:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-25 10:06:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 217 transitions. [2020-09-25 10:06:36,868 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 217 transitions. Word has length 83 [2020-09-25 10:06:36,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:36,868 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 217 transitions. [2020-09-25 10:06:36,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:06:36,869 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 217 transitions. [2020-09-25 10:06:36,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 10:06:36,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:36,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:36,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:06:36,871 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:36,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:36,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1804595944, now seen corresponding path program 1 times [2020-09-25 10:06:36,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:36,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928145335] [2020-09-25 10:06:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking...