/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:23:42,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:23:42,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:23:42,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:23:42,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:23:42,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:23:42,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:23:42,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:23:42,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:23:42,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:23:42,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:23:42,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:23:42,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:23:42,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:23:42,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:23:42,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:23:42,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:23:42,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:23:42,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:23:42,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:23:42,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:23:42,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:23:42,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:23:42,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:23:42,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:23:42,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:23:42,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:23:42,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:23:42,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:23:42,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:23:42,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:23:42,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:23:42,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:23:42,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:23:42,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:23:42,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:23:42,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:23:42,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:23:42,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:23:42,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:23:42,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:23:42,734 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 04:23:42,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:23:42,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:23:42,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:23:42,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:23:42,763 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:23:42,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:23:42,764 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:23:42,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:23:42,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:23:42,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:23:42,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:23:42,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:23:42,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:23:42,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:23:42,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:23:42,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:23:42,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:23:42,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:23:42,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:23:42,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:23:42,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:23:42,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:23:42,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:23:42,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:23:42,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:23:42,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:23:42,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:23:42,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:23:42,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:23:42,768 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:23:43,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:23:43,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:23:43,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:23:43,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:23:43,239 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:23:43,241 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-25 04:23:43,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bafc4b958/ae10d69346524e1e83852c3e489fadb1/FLAGa99b7c0b7 [2020-09-25 04:23:43,936 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:23:43,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-25 04:23:43,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bafc4b958/ae10d69346524e1e83852c3e489fadb1/FLAGa99b7c0b7 [2020-09-25 04:23:44,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bafc4b958/ae10d69346524e1e83852c3e489fadb1 [2020-09-25 04:23:44,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:23:44,232 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:23:44,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:44,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:23:44,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:23:44,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:44" (1/1) ... [2020-09-25 04:23:44,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44, skipping insertion in model container [2020-09-25 04:23:44,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:44" (1/1) ... [2020-09-25 04:23:44,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:23:44,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:23:44,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:44,807 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:23:44,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:44,918 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:23:44,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44 WrapperNode [2020-09-25 04:23:44,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:44,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:23:44,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:23:44,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:23:44,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44" (1/1) ... [2020-09-25 04:23:44,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44" (1/1) ... [2020-09-25 04:23:44,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44" (1/1) ... [2020-09-25 04:23:44,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44" (1/1) ... [2020-09-25 04:23:44,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44" (1/1) ... [2020-09-25 04:23:44,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44" (1/1) ... [2020-09-25 04:23:44,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44" (1/1) ... [2020-09-25 04:23:45,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:23:45,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:23:45,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:23:45,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:23:45,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44" (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 04:23:45,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:23:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:23:45,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:23:45,086 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 04:23:45,086 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 04:23:45,086 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 04:23:45,086 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 04:23:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 04:23:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 04:23:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 04:23:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 04:23:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 04:23:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 04:23:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 04:23:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 04:23:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 04:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 04:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 04:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 04:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 04:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 04:23:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 04:23:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 04:23:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 04:23:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 04:23:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 04:23:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 04:23:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 04:23:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 04:23:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 04:23:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 04:23:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 04:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 04:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 04:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 04:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 04:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 04:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 04:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 04:23:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 04:23:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 04:23:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 04:23:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 04:23:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 04:23:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 04:23:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 04:23:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 04:23:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 04:23:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 04:23:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 04:23:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 04:23:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 04:23:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 04:23:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:23:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 04:23:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 04:23:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 04:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 04:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 04:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 04:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 04:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 04:23:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 04:23:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 04:23:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:23:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 04:23:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 04:23:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 04:23:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 04:23:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 04:23:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 04:23:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 04:23:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 04:23:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 04:23:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 04:23:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 04:23:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 04:23:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 04:23:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 04:23:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 04:23:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 04:23:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 04:23:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 04:23:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 04:23:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 04:23:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 04:23:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 04:23:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 04:23:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 04:23:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 04:23:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 04:23:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 04:23:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 04:23:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 04:23:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 04:23:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 04:23:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 04:23:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 04:23:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 04:23:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 04:23:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 04:23:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 04:23:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 04:23:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 04:23:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:23:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:23:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:23:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:23:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:23:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:23:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:23:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:23:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:23:45,807 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:23:45,808 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-25 04:23:45,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:45 BoogieIcfgContainer [2020-09-25 04:23:45,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:23:45,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:23:45,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:23:45,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:23:45,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:23:44" (1/3) ... [2020-09-25 04:23:45,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1170a963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:45, skipping insertion in model container [2020-09-25 04:23:45,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:44" (2/3) ... [2020-09-25 04:23:45,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1170a963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:45, skipping insertion in model container [2020-09-25 04:23:45,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:45" (3/3) ... [2020-09-25 04:23:45,840 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-09-25 04:23:45,851 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:23:45,865 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-25 04:23:45,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-25 04:23:45,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:23:45,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:23:45,920 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:23:45,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:23:45,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:23:45,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:23:45,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:23:45,921 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:23:45,952 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-25 04:23:45,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-25 04:23:45,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:45,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:45,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:45,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-09-25 04:23:45,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:45,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073268490] [2020-09-25 04:23:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:46,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:46,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:23:46,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:46,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 04:23:46,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:46,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:23:46,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:23:46,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:23:46,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:23:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:46,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:46,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:46,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:23:46,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:46,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:46,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:46,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073268490] [2020-09-25 04:23:46,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:46,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:23:46,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14492354] [2020-09-25 04:23:46,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:23:46,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:46,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:23:46,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:23:46,565 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-25 04:23:46,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:46,956 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-09-25 04:23:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:23:46,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-25 04:23:46,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:46,973 INFO L225 Difference]: With dead ends: 359 [2020-09-25 04:23:46,973 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 04:23:46,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:23:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 04:23:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-25 04:23:47,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 04:23:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-09-25 04:23:47,038 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-09-25 04:23:47,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:47,039 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-09-25 04:23:47,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:23:47,039 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-09-25 04:23:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 04:23:47,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:47,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:47,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:23:47,041 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:47,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-09-25 04:23:47,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:47,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110868061] [2020-09-25 04:23:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:47,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:47,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:47,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:23:47,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 04:23:47,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:47,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:23:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 04:23:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:23:47,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:23:47,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:47,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:47,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:47,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:47,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:47,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:23:47,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:47,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:47,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:47,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:47,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110868061] [2020-09-25 04:23:47,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:47,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:23:47,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625989760] [2020-09-25 04:23:47,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:23:47,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:47,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:23:47,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:23:47,386 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 4 states. [2020-09-25 04:23:47,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:47,647 INFO L93 Difference]: Finished difference Result 170 states and 179 transitions. [2020-09-25 04:23:47,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:23:47,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-25 04:23:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:47,675 INFO L225 Difference]: With dead ends: 170 [2020-09-25 04:23:47,675 INFO L226 Difference]: Without dead ends: 165 [2020-09-25 04:23:47,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:23:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-25 04:23:47,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-25 04:23:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-25 04:23:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-09-25 04:23:47,691 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 25 [2020-09-25 04:23:47,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:47,691 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-09-25 04:23:47,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:23:47,692 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-09-25 04:23:47,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 04:23:47,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:47,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:47,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:23:47,694 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:47,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:47,694 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-09-25 04:23:47,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:47,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846735572] [2020-09-25 04:23:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:47,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:48,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:48,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:23:48,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:48,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 04:23:48,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:48,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:23:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:23:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:23:48,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:48,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:48,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:48,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:48,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:48,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:48,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:48,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:48,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846735572] [2020-09-25 04:23:48,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:48,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:23:48,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6909469] [2020-09-25 04:23:48,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:23:48,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:48,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:23:48,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:23:48,086 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 6 states. [2020-09-25 04:23:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:48,462 INFO L93 Difference]: Finished difference Result 264 states and 279 transitions. [2020-09-25 04:23:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:23:48,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 04:23:48,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:48,465 INFO L225 Difference]: With dead ends: 264 [2020-09-25 04:23:48,465 INFO L226 Difference]: Without dead ends: 259 [2020-09-25 04:23:48,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:23:48,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-25 04:23:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 170. [2020-09-25 04:23:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-25 04:23:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 180 transitions. [2020-09-25 04:23:48,481 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 180 transitions. Word has length 27 [2020-09-25 04:23:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:48,481 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 180 transitions. [2020-09-25 04:23:48,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:23:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 180 transitions. [2020-09-25 04:23:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:23:48,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:48,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:48,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:23:48,483 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1500955686, now seen corresponding path program 1 times [2020-09-25 04:23:48,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:48,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235485486] [2020-09-25 04:23:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:48,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:48,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:49,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:49,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:23:49,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:23:49,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-09-25 04:23:49,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:49,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:23:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:23:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:23:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:49,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:49,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:49,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:49,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:49,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:23:49,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:49,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:49,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235485486] [2020-09-25 04:23:49,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:49,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:23:49,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358394399] [2020-09-25 04:23:49,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:23:49,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:49,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:23:49,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:23:49,247 INFO L87 Difference]: Start difference. First operand 170 states and 180 transitions. Second operand 5 states. [2020-09-25 04:23:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:49,545 INFO L93 Difference]: Finished difference Result 200 states and 213 transitions. [2020-09-25 04:23:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:23:49,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-25 04:23:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:49,548 INFO L225 Difference]: With dead ends: 200 [2020-09-25 04:23:49,548 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 04:23:49,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:23:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 04:23:49,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2020-09-25 04:23:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-25 04:23:49,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-09-25 04:23:49,575 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 33 [2020-09-25 04:23:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:49,575 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-09-25 04:23:49,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:23:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-09-25 04:23:49,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 04:23:49,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:49,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:49,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:23:49,578 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:49,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:49,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1216115010, now seen corresponding path program 1 times [2020-09-25 04:23:49,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:49,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958787394] [2020-09-25 04:23:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:50,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:50,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:23:50,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1251 [2020-09-25 04:23:50,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:50,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:23:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 04:23:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:23:50,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:50,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:50,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:50,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:50,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:23:50,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:50,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:50,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958787394] [2020-09-25 04:23:50,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:50,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:23:50,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283400662] [2020-09-25 04:23:50,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:23:50,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:50,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:23:50,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:23:50,994 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-09-25 04:23:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:51,589 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2020-09-25 04:23:51,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:23:51,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 04:23:51,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:51,591 INFO L225 Difference]: With dead ends: 251 [2020-09-25 04:23:51,592 INFO L226 Difference]: Without dead ends: 246 [2020-09-25 04:23:51,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:23:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-25 04:23:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 154. [2020-09-25 04:23:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 04:23:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 163 transitions. [2020-09-25 04:23:51,606 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 163 transitions. Word has length 34 [2020-09-25 04:23:51,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:51,607 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 163 transitions. [2020-09-25 04:23:51,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:23:51,607 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 163 transitions. [2020-09-25 04:23:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 04:23:51,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:51,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:51,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:23:51,610 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:51,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:51,610 INFO L82 PathProgramCache]: Analyzing trace with hash 125861883, now seen corresponding path program 1 times [2020-09-25 04:23:51,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:51,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769739715] [2020-09-25 04:23:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:51,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:51,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:53,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:53,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:23:53,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:23:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2330 [2020-09-25 04:23:53,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:53,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:23:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:23:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:23:53,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:54,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:54,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:54,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:54,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:54,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:54,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:23:54,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:54,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:54,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:54,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:54,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:54,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:54,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769739715] [2020-09-25 04:23:54,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:54,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:23:54,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866078369] [2020-09-25 04:23:54,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:23:54,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:54,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:23:54,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:23:54,027 INFO L87 Difference]: Start difference. First operand 154 states and 163 transitions. Second operand 6 states. [2020-09-25 04:23:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:54,337 INFO L93 Difference]: Finished difference Result 364 states and 386 transitions. [2020-09-25 04:23:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:23:54,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-09-25 04:23:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:54,340 INFO L225 Difference]: With dead ends: 364 [2020-09-25 04:23:54,340 INFO L226 Difference]: Without dead ends: 241 [2020-09-25 04:23:54,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:23:54,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-25 04:23:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-09-25 04:23:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 04:23:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2020-09-25 04:23:54,348 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 40 [2020-09-25 04:23:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:54,348 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2020-09-25 04:23:54,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:23:54,348 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2020-09-25 04:23:54,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 04:23:54,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:54,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:54,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:23:54,350 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:54,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:54,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2091807586, now seen corresponding path program 1 times [2020-09-25 04:23:54,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:54,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845144565] [2020-09-25 04:23:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:55,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:55,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 04:23:55,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:23:55,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-09-25 04:23:55,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:55,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:23:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:23:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:23:55,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:55,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:55,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:55,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:55,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:55,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:55,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:55,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:55,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:55,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:55,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:55,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:55,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845144565] [2020-09-25 04:23:55,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:55,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 04:23:55,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538064148] [2020-09-25 04:23:55,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:23:55,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:55,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:23:55,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:23:55,723 INFO L87 Difference]: Start difference. First operand 157 states and 166 transitions. Second operand 9 states. [2020-09-25 04:23:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:56,326 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-09-25 04:23:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:23:56,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-25 04:23:56,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:56,328 INFO L225 Difference]: With dead ends: 164 [2020-09-25 04:23:56,328 INFO L226 Difference]: Without dead ends: 162 [2020-09-25 04:23:56,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:23:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-25 04:23:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 155. [2020-09-25 04:23:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 04:23:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 164 transitions. [2020-09-25 04:23:56,336 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 164 transitions. Word has length 42 [2020-09-25 04:23:56,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:56,337 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 164 transitions. [2020-09-25 04:23:56,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:23:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 164 transitions. [2020-09-25 04:23:56,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 04:23:56,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:56,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:56,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:23:56,345 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:56,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:56,345 INFO L82 PathProgramCache]: Analyzing trace with hash 654436304, now seen corresponding path program 1 times [2020-09-25 04:23:56,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:56,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884759456] [2020-09-25 04:23:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:56,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:56,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:56,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 04:23:56,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:56,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 04:23:56,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:56,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:23:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 04:23:56,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:23:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:56,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:56,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:56,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:56,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:23:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:56,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:56,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884759456] [2020-09-25 04:23:56,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:56,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:23:56,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995159556] [2020-09-25 04:23:56,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:23:56,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:56,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:23:56,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:23:56,482 INFO L87 Difference]: Start difference. First operand 155 states and 164 transitions. Second operand 4 states. [2020-09-25 04:23:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:56,687 INFO L93 Difference]: Finished difference Result 195 states and 208 transitions. [2020-09-25 04:23:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:23:56,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 04:23:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:56,693 INFO L225 Difference]: With dead ends: 195 [2020-09-25 04:23:56,693 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 04:23:56,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:23:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 04:23:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 157. [2020-09-25 04:23:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 04:23:56,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-09-25 04:23:56,701 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 43 [2020-09-25 04:23:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:56,702 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-09-25 04:23:56,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:23:56,702 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-09-25 04:23:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 04:23:56,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:56,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:56,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:23:56,706 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:56,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:56,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1847672787, now seen corresponding path program 1 times [2020-09-25 04:23:56,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:56,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582242211] [2020-09-25 04:23:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:57,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:57,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 04:23:57,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:23:57,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-09-25 04:23:57,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:57,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:23:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 04:23:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:23:57,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:57,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:57,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:57,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:57,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:57,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:23:57,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:57,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:57,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582242211] [2020-09-25 04:23:57,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:57,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:23:57,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978095300] [2020-09-25 04:23:57,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:23:57,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:57,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:23:57,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:23:57,579 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states. [2020-09-25 04:23:57,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:57,770 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2020-09-25 04:23:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:23:57,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-25 04:23:57,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:57,772 INFO L225 Difference]: With dead ends: 157 [2020-09-25 04:23:57,772 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 04:23:57,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:23:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 04:23:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-25 04:23:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 04:23:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2020-09-25 04:23:57,779 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 45 [2020-09-25 04:23:57,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:57,780 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2020-09-25 04:23:57,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:23:57,780 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2020-09-25 04:23:57,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 04:23:57,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:57,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:57,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:23:57,781 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:57,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:57,782 INFO L82 PathProgramCache]: Analyzing trace with hash 11890970, now seen corresponding path program 1 times [2020-09-25 04:23:57,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:57,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648385018] [2020-09-25 04:23:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:57,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:57,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:58,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:59,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:59,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:23:59,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:23:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1713 [2020-09-25 04:23:59,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:59,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:23:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:23:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:23:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:59,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:59,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:59,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:59,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:23:59,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:59,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:59,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648385018] [2020-09-25 04:23:59,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:59,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:23:59,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192265431] [2020-09-25 04:23:59,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:23:59,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:59,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:23:59,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:23:59,611 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 7 states. [2020-09-25 04:24:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:00,151 INFO L93 Difference]: Finished difference Result 340 states and 364 transitions. [2020-09-25 04:24:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:24:00,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-09-25 04:24:00,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:00,153 INFO L225 Difference]: With dead ends: 340 [2020-09-25 04:24:00,153 INFO L226 Difference]: Without dead ends: 275 [2020-09-25 04:24:00,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:24:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-25 04:24:00,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 176. [2020-09-25 04:24:00,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 04:24:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 187 transitions. [2020-09-25 04:24:00,163 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 187 transitions. Word has length 49 [2020-09-25 04:24:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:00,164 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 187 transitions. [2020-09-25 04:24:00,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 187 transitions. [2020-09-25 04:24:00,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 04:24:00,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:00,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:00,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:24:00,165 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:00,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:00,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-09-25 04:24:00,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:00,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175676314] [2020-09-25 04:24:00,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:00,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:01,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:03,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:03,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:24:03,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:24:03,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3076 [2020-09-25 04:24:03,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:03,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:03,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:03,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 04:24:03,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:24:03,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:03,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:03,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:03,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:03,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:03,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:24:03,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:03,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:03,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:03,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:03,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175676314] [2020-09-25 04:24:03,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:03,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 04:24:03,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420212731] [2020-09-25 04:24:03,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:24:03,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:03,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:24:03,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:24:03,617 INFO L87 Difference]: Start difference. First operand 176 states and 187 transitions. Second operand 10 states. [2020-09-25 04:24:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:04,750 INFO L93 Difference]: Finished difference Result 333 states and 356 transitions. [2020-09-25 04:24:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:24:04,751 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 04:24:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:04,753 INFO L225 Difference]: With dead ends: 333 [2020-09-25 04:24:04,753 INFO L226 Difference]: Without dead ends: 330 [2020-09-25 04:24:04,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-25 04:24:04,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-09-25 04:24:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 196. [2020-09-25 04:24:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 04:24:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 210 transitions. [2020-09-25 04:24:04,763 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 210 transitions. Word has length 54 [2020-09-25 04:24:04,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:04,764 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 210 transitions. [2020-09-25 04:24:04,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:24:04,764 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 210 transitions. [2020-09-25 04:24:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 04:24:04,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:04,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:04,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:24:04,765 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1270543956, now seen corresponding path program 1 times [2020-09-25 04:24:04,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:04,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286002761] [2020-09-25 04:24:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:05,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:05,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 04:24:05,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:05,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 04:24:05,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:05,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:05,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:05,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 04:24:05,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:24:05,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:05,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:05,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:05,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:05,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:05,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:05,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:05,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:05,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:05,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286002761] [2020-09-25 04:24:05,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:05,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:05,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955076872] [2020-09-25 04:24:05,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:05,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:05,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:05,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:05,048 INFO L87 Difference]: Start difference. First operand 196 states and 210 transitions. Second operand 4 states. [2020-09-25 04:24:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:05,246 INFO L93 Difference]: Finished difference Result 202 states and 216 transitions. [2020-09-25 04:24:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:24:05,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-25 04:24:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:05,248 INFO L225 Difference]: With dead ends: 202 [2020-09-25 04:24:05,248 INFO L226 Difference]: Without dead ends: 197 [2020-09-25 04:24:05,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:05,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-25 04:24:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-09-25 04:24:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-25 04:24:05,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 211 transitions. [2020-09-25 04:24:05,257 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 211 transitions. Word has length 56 [2020-09-25 04:24:05,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:05,258 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 211 transitions. [2020-09-25 04:24:05,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 211 transitions. [2020-09-25 04:24:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 04:24:05,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:05,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:05,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 04:24:05,260 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:05,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:05,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-09-25 04:24:05,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:05,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171998526] [2020-09-25 04:24:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 04:24:05,281 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 04:24:05,282 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:24:05,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 04:24:05,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:24:05 BoogieIcfgContainer [2020-09-25 04:24:05,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:24:05,326 INFO L168 Benchmark]: Toolchain (without parser) took 21093.00 ms. Allocated memory was 140.0 MB in the beginning and 389.5 MB in the end (delta: 249.6 MB). Free memory was 102.1 MB in the beginning and 212.0 MB in the end (delta: -109.9 MB). Peak memory consumption was 139.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:05,327 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:24:05,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.27 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 171.4 MB in the end (delta: -70.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:05,328 INFO L168 Benchmark]: Boogie Preprocessor took 82.63 ms. Allocated memory is still 203.9 MB. Free memory was 171.4 MB in the beginning and 168.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:05,330 INFO L168 Benchmark]: RCFGBuilder took 819.13 ms. Allocated memory is still 203.9 MB. Free memory was 168.0 MB in the beginning and 104.4 MB in the end (delta: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:05,335 INFO L168 Benchmark]: TraceAbstraction took 19492.57 ms. Allocated memory was 203.9 MB in the beginning and 389.5 MB in the end (delta: 185.6 MB). Free memory was 104.4 MB in the beginning and 212.0 MB in the end (delta: -107.6 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:05,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 687.27 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 171.4 MB in the end (delta: -70.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.63 ms. Allocated memory is still 203.9 MB. Free memory was 171.4 MB in the beginning and 168.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 819.13 ms. Allocated memory is still 203.9 MB. Free memory was 168.0 MB in the beginning and 104.4 MB in the end (delta: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19492.57 ms. Allocated memory was 203.9 MB in the beginning and 389.5 MB in the end (delta: 185.6 MB). Free memory was 104.4 MB in the beginning and 212.0 MB in the end (delta: -107.6 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1028] EXPR inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.3s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1810 SDtfs, 1817 SDslu, 3855 SDs, 0 SdLazy, 3120 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 572 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.3s InterpolantComputationTime, 519 NumberOfCodeBlocks, 519 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 449 ConstructedInterpolants, 0 QuantifiedInterpolants, 169414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...