/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:27:57,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:27:57,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:27:57,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:27:57,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:27:57,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:27:57,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:27:57,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:27:57,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:27:57,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:27:57,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:27:57,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:27:57,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:27:57,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:27:57,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:27:57,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:27:57,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:27:57,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:27:57,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:27:57,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:27:57,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:27:57,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:27:57,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:27:57,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:27:57,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:27:57,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:27:57,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:27:57,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:27:57,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:27:57,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:27:57,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:27:57,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:27:57,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:27:57,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:27:57,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:27:57,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:27:57,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:27:57,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:27:57,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:27:57,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:27:57,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:27:57,773 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 13:27:57,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:27:57,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:27:57,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:27:57,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:27:57,802 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:27:57,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:27:57,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:27:57,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:27:57,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:27:57,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:27:57,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:27:57,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:27:57,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:27:57,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:27:57,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:27:57,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:27:57,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:27:57,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:27:57,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:27:57,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:27:57,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:27:57,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:27:57,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:27:57,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:27:57,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:27:57,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:27:57,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:27:57,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:27:57,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:27:57,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:27:58,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:27:58,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:27:58,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:27:58,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:27:58,292 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:27:58,294 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 13:27:58,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/419957291/96a203340f2f46d8813c30bb51c16ca5/FLAGcedd948fa [2020-09-25 13:27:58,981 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:27:58,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 13:27:59,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/419957291/96a203340f2f46d8813c30bb51c16ca5/FLAGcedd948fa [2020-09-25 13:27:59,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/419957291/96a203340f2f46d8813c30bb51c16ca5 [2020-09-25 13:27:59,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:27:59,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:27:59,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:27:59,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:27:59,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:27:59,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:27:59" (1/1) ... [2020-09-25 13:27:59,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0c700e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59, skipping insertion in model container [2020-09-25 13:27:59,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:27:59" (1/1) ... [2020-09-25 13:27:59,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:27:59,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:27:59,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:27:59,833 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:27:59,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:27:59,946 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:27:59,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59 WrapperNode [2020-09-25 13:27:59,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:27:59,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:27:59,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:27:59,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:27:59,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59" (1/1) ... [2020-09-25 13:27:59,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59" (1/1) ... [2020-09-25 13:27:59,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59" (1/1) ... [2020-09-25 13:27:59,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59" (1/1) ... [2020-09-25 13:28:00,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59" (1/1) ... [2020-09-25 13:28:00,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59" (1/1) ... [2020-09-25 13:28:00,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59" (1/1) ... [2020-09-25 13:28:00,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:00,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:00,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:00,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:00,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:00,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:00,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:00,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 13:28:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 13:28:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 13:28:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 13:28:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 13:28:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 13:28:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 13:28:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 13:28:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 13:28:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 13:28:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 13:28:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 13:28:00,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 13:28:00,130 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 13:28:00,130 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 13:28:00,130 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 13:28:00,130 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 13:28:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 13:28:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 13:28:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 13:28:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 13:28:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 13:28:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 13:28:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 13:28:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 13:28:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 13:28:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 13:28:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 13:28:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 13:28:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 13:28:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 13:28:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 13:28:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 13:28:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 13:28:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 13:28:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 13:28:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 13:28:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 13:28:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 13:28:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 13:28:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 13:28:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 13:28:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 13:28:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 13:28:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 13:28:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 13:28:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 13:28:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 13:28:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 13:28:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 13:28:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:28:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:28:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 13:28:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:28:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 13:28:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 13:28:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 13:28:00,138 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 13:28:00,138 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 13:28:00,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:28:00,138 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 13:28:00,138 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 13:28:00,138 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 13:28:00,139 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:00,139 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 13:28:00,139 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 13:28:00,139 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 13:28:00,139 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 13:28:00,139 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 13:28:00,140 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 13:28:00,140 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 13:28:00,140 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 13:28:00,140 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 13:28:00,140 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 13:28:00,140 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 13:28:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 13:28:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 13:28:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 13:28:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 13:28:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 13:28:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 13:28:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 13:28:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 13:28:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 13:28:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 13:28:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 13:28:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 13:28:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 13:28:00,143 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 13:28:00,143 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 13:28:00,143 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 13:28:00,143 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 13:28:00,143 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 13:28:00,143 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 13:28:00,143 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 13:28:00,144 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 13:28:00,144 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 13:28:00,144 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 13:28:00,144 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 13:28:00,144 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 13:28:00,144 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 13:28:00,144 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 13:28:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 13:28:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:28:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:28:00,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:28:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:28:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:28:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:28:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:00,811 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:00,811 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-25 13:28:00,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:00 BoogieIcfgContainer [2020-09-25 13:28:00,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:00,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:00,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:00,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:00,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:27:59" (1/3) ... [2020-09-25 13:28:00,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4068121c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:00, skipping insertion in model container [2020-09-25 13:28:00,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:59" (2/3) ... [2020-09-25 13:28:00,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4068121c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:00, skipping insertion in model container [2020-09-25 13:28:00,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:00" (3/3) ... [2020-09-25 13:28:00,827 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-25 13:28:00,839 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:00,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-25 13:28:00,872 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-25 13:28:00,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:00,903 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:00,903 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:00,903 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:00,903 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:00,903 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:00,904 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:00,904 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:00,929 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 13:28:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 13:28:00,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:00,938 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] [2020-09-25 13:28:00,938 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:00,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-09-25 13:28:00,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:00,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684884976] [2020-09-25 13:28:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:01,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:01,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:28:01,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:01,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-09-25 13:28:01,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:01,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:28:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:28:01,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:01,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:01,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:01,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:01,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:28:01,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:01,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:01,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:01,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:01,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:01,826 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 13:28:01,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684884976] [2020-09-25 13:28:01,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:01,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:28:01,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210466704] [2020-09-25 13:28:01,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:28:01,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:01,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:28:01,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:28:01,855 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 13:28:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:02,377 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2020-09-25 13:28:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:28:02,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-25 13:28:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:02,394 INFO L225 Difference]: With dead ends: 281 [2020-09-25 13:28:02,394 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 13:28:02,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:28:02,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 13:28:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-09-25 13:28:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 13:28:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-25 13:28:02,462 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 23 [2020-09-25 13:28:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:02,462 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-25 13:28:02,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:28:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-25 13:28:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 13:28:02,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:02,464 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] [2020-09-25 13:28:02,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:02,465 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:02,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:02,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-09-25 13:28:02,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:02,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876865757] [2020-09-25 13:28:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:02,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:02,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:02,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:28:02,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:02,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 13:28:02,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:02,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:28:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:28:02,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-09-25 13:28:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:02,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:02,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:28:02,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:02,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:02,904 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 13:28:02,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876865757] [2020-09-25 13:28:02,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:02,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:28:02,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707924121] [2020-09-25 13:28:02,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:28:02,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:02,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:28:02,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:02,910 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states. [2020-09-25 13:28:03,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:03,225 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-09-25 13:28:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:28:03,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 13:28:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:03,228 INFO L225 Difference]: With dead ends: 146 [2020-09-25 13:28:03,229 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 13:28:03,230 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 13:28:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 13:28:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-09-25 13:28:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 13:28:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-25 13:28:03,255 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-09-25 13:28:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:03,255 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-25 13:28:03,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:28:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-25 13:28:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:28:03,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:03,257 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] [2020-09-25 13:28:03,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:28:03,258 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-09-25 13:28:03,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:03,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609515100] [2020-09-25 13:28:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:03,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:03,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:03,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:03,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 13:28:03,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-25 13:28:03,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:03,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 13:28:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 13:28:03,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:03,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:03,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:03,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:03,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:03,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:28:03,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:03,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:03,961 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 13:28:03,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609515100] [2020-09-25 13:28:03,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:03,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:28:03,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139227119] [2020-09-25 13:28:03,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:28:03,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:03,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:28:03,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:03,965 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-09-25 13:28:04,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:04,307 INFO L93 Difference]: Finished difference Result 162 states and 169 transitions. [2020-09-25 13:28:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:28:04,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 13:28:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:04,309 INFO L225 Difference]: With dead ends: 162 [2020-09-25 13:28:04,309 INFO L226 Difference]: Without dead ends: 140 [2020-09-25 13:28:04,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 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 13:28:04,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-25 13:28:04,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2020-09-25 13:28:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 13:28:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-09-25 13:28:04,328 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 38 [2020-09-25 13:28:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:04,329 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-09-25 13:28:04,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:28:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-09-25 13:28:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:28:04,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:04,331 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] [2020-09-25 13:28:04,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:28:04,331 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:04,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-09-25 13:28:04,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:04,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321357163] [2020-09-25 13:28:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:04,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 13:28:04,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 13:28:04,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:04,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:28:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:28:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:28:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:04,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:04,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:04,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:04,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:04,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:04,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:04,590 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 13:28:04,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321357163] [2020-09-25 13:28:04,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:04,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:28:04,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440725232] [2020-09-25 13:28:04,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:28:04,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:04,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:28:04,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:28:04,592 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 5 states. [2020-09-25 13:28:04,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:04,796 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-09-25 13:28:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:28:04,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-25 13:28:04,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:04,798 INFO L225 Difference]: With dead ends: 117 [2020-09-25 13:28:04,798 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 13:28:04,799 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 13:28:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 13:28:04,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2020-09-25 13:28:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 13:28:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-09-25 13:28:04,807 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 38 [2020-09-25 13:28:04,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:04,808 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-09-25 13:28:04,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:28:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-09-25 13:28:04,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 13:28:04,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:04,810 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 13:28:04,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:28:04,810 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:04,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:04,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-09-25 13:28:04,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:04,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621841915] [2020-09-25 13:28:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:05,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:05,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:28:05,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 13:28:05,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:05,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 13:28:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:28:05,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:05,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:05,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:05,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:05,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:05,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:28:05,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:05,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:05,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:05,198 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 13:28:05,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621841915] [2020-09-25 13:28:05,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:05,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:28:05,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24258685] [2020-09-25 13:28:05,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:28:05,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:05,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:28:05,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:28:05,201 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 5 states. [2020-09-25 13:28:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:05,424 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-09-25 13:28:05,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:28:05,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-25 13:28:05,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:05,425 INFO L225 Difference]: With dead ends: 112 [2020-09-25 13:28:05,426 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 13:28:05,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 13:28:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 13:28:05,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 13:28:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 13:28:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-25 13:28:05,433 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 42 [2020-09-25 13:28:05,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:05,434 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-25 13:28:05,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:28:05,434 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-25 13:28:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 13:28:05,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:05,436 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] [2020-09-25 13:28:05,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:28:05,437 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:05,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:05,437 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-09-25 13:28:05,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:05,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923839940] [2020-09-25 13:28:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:05,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:06,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:06,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:28:06,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:06,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-09-25 13:28:06,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:06,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:06,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:28:06,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:06,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:28:06,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:07,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:07,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:07,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:07,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:07,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:07,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:28:07,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:07,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:07,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:07,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:07,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:07,121 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 13:28:07,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923839940] [2020-09-25 13:28:07,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:07,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 13:28:07,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205630488] [2020-09-25 13:28:07,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:28:07,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:07,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:28:07,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:28:07,124 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 10 states. [2020-09-25 13:28:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:07,693 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2020-09-25 13:28:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:28:07,694 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-09-25 13:28:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:07,695 INFO L225 Difference]: With dead ends: 154 [2020-09-25 13:28:07,695 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 13:28:07,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:28:07,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 13:28:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 115. [2020-09-25 13:28:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 13:28:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-09-25 13:28:07,713 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 44 [2020-09-25 13:28:07,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:07,713 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-09-25 13:28:07,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:28:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-09-25 13:28:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 13:28:07,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:07,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:07,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:28:07,715 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:07,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:07,719 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-09-25 13:28:07,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:07,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225398174] [2020-09-25 13:28:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:09,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:12,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:12,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:28:12,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:28:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:28:12,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:12,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:28:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 13:28:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:28:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:13,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:13,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:13,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:13,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:28:13,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:13,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:13,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:13,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225398174] [2020-09-25 13:28:13,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:13,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:28:13,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909061242] [2020-09-25 13:28:13,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:28:13,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:13,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:28:13,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:28:13,266 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 15 states. [2020-09-25 13:28:14,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:14,307 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2020-09-25 13:28:14,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:28:14,307 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-09-25 13:28:14,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:14,309 INFO L225 Difference]: With dead ends: 174 [2020-09-25 13:28:14,309 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 13:28:14,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-09-25 13:28:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 13:28:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 122. [2020-09-25 13:28:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 13:28:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 126 transitions. [2020-09-25 13:28:14,318 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 126 transitions. Word has length 45 [2020-09-25 13:28:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:14,318 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 126 transitions. [2020-09-25 13:28:14,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:28:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 126 transitions. [2020-09-25 13:28:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 13:28:14,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:14,321 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:14,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:28:14,321 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:14,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1939042985, now seen corresponding path program 2 times [2020-09-25 13:28:14,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:14,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224234807] [2020-09-25 13:28:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:14,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:14,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 13:28:14,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 13:28:14,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:14,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:28:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:28:14,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:14,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:14,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:14,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:14,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:14,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:14,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:14,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:14,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:14,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:14,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:28:14,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224234807] [2020-09-25 13:28:14,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:14,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:28:14,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208886338] [2020-09-25 13:28:14,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:14,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:14,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:14,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:14,723 INFO L87 Difference]: Start difference. First operand 122 states and 126 transitions. Second operand 7 states. [2020-09-25 13:28:15,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:15,062 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-09-25 13:28:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:28:15,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 13:28:15,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:15,064 INFO L225 Difference]: With dead ends: 147 [2020-09-25 13:28:15,064 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 13:28:15,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:28:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 13:28:15,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-09-25 13:28:15,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 13:28:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2020-09-25 13:28:15,077 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 52 [2020-09-25 13:28:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:15,077 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2020-09-25 13:28:15,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2020-09-25 13:28:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 13:28:15,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:15,079 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 13:28:15,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:28:15,079 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:15,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:15,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-09-25 13:28:15,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:15,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801592559] [2020-09-25 13:28:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:19,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:28:19,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4141 [2020-09-25 13:28:19,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:19,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:28:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:28:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:19,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:19,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:19,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:19,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:19,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:19,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:19,447 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 13:28:19,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801592559] [2020-09-25 13:28:19,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:19,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 13:28:19,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693217510] [2020-09-25 13:28:19,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:28:19,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:19,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:28:19,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:28:19,449 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand 10 states. [2020-09-25 13:28:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:19,970 INFO L93 Difference]: Finished difference Result 179 states and 186 transitions. [2020-09-25 13:28:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:28:19,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 13:28:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:19,972 INFO L225 Difference]: With dead ends: 179 [2020-09-25 13:28:19,973 INFO L226 Difference]: Without dead ends: 177 [2020-09-25 13:28:19,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:28:19,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-25 13:28:19,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 92. [2020-09-25 13:28:19,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 13:28:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-09-25 13:28:19,979 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 54 [2020-09-25 13:28:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:19,980 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-09-25 13:28:19,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:28:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-09-25 13:28:19,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 13:28:19,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:19,981 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:19,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:28:19,981 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-09-25 13:28:19,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:19,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653117685] [2020-09-25 13:28:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:20,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:20,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:20,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 13:28:20,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:20,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-09-25 13:28:20,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:20,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:28:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:28:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:28:20,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:21,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:21,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:21,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:21,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:21,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:21,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:21,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:21,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:21,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653117685] [2020-09-25 13:28:21,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:21,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:28:21,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471633261] [2020-09-25 13:28:21,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:28:21,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:21,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:28:21,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:28:21,430 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 17 states. [2020-09-25 13:28:22,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:22,901 INFO L93 Difference]: Finished difference Result 181 states and 189 transitions. [2020-09-25 13:28:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:28:22,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-25 13:28:22,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:22,903 INFO L225 Difference]: With dead ends: 181 [2020-09-25 13:28:22,903 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 13:28:22,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-09-25 13:28:22,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 13:28:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 125. [2020-09-25 13:28:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 13:28:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2020-09-25 13:28:22,910 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 55 [2020-09-25 13:28:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:22,911 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2020-09-25 13:28:22,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:28:22,911 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2020-09-25 13:28:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 13:28:22,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:22,912 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:22,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:28:22,913 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:22,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1380187476, now seen corresponding path program 1 times [2020-09-25 13:28:22,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:22,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064057481] [2020-09-25 13:28:22,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:27,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:27,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:28:27,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:27,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:28:27,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:27,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:27,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:27,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 13:28:27,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:28:27,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:28,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:28,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:28,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:28,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:28:28,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:28,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:28,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:28,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:28,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:28:28,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064057481] [2020-09-25 13:28:28,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:28,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:28:28,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076719653] [2020-09-25 13:28:28,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:28:28,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:28,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:28:28,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:28,072 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 6 states. [2020-09-25 13:28:28,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:28,326 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2020-09-25 13:28:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:28:28,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-09-25 13:28:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:28,328 INFO L225 Difference]: With dead ends: 153 [2020-09-25 13:28:28,328 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 13:28:28,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:28:28,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 13:28:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-09-25 13:28:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 13:28:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-09-25 13:28:28,336 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 64 [2020-09-25 13:28:28,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:28,336 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-09-25 13:28:28,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:28:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-09-25 13:28:28,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 13:28:28,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:28,337 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:28,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:28:28,338 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:28,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:28,338 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-09-25 13:28:28,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:28,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355985856] [2020-09-25 13:28:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:30,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 13:28:30,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2188 [2020-09-25 13:28:30,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:30,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:28:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:28:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:28:30,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:31,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:31,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:31,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:31,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:28:31,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:31,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:31,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355985856] [2020-09-25 13:28:31,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:31,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 13:28:31,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59043988] [2020-09-25 13:28:31,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 13:28:31,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:31,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 13:28:31,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:28:31,387 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 22 states. [2020-09-25 13:28:32,716 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-09-25 13:28:32,853 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-09-25 13:28:33,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:33,615 INFO L93 Difference]: Finished difference Result 205 states and 212 transitions. [2020-09-25 13:28:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 13:28:33,616 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-09-25 13:28:33,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:33,617 INFO L225 Difference]: With dead ends: 205 [2020-09-25 13:28:33,617 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 13:28:33,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 13:28:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 13:28:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2020-09-25 13:28:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 13:28:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2020-09-25 13:28:33,627 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 65 [2020-09-25 13:28:33,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:33,628 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2020-09-25 13:28:33,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 13:28:33,628 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2020-09-25 13:28:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:28:33,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:33,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:33,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:28:33,629 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:33,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:33,630 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-09-25 13:28:33,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:33,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388327604] [2020-09-25 13:28:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:38,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:28:38,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:28:38,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-09-25 13:28:38,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:38,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:38,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:28:38,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 13:28:38,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:28:38,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:39,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:39,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:39,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:39,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:39,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:39,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:39,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:39,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:39,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388327604] [2020-09-25 13:28:39,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:39,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:28:39,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809016156] [2020-09-25 13:28:39,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:28:39,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:39,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:28:39,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:28:39,157 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 16 states. [2020-09-25 13:28:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:40,261 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2020-09-25 13:28:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:28:40,261 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 13:28:40,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:40,263 INFO L225 Difference]: With dead ends: 229 [2020-09-25 13:28:40,264 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 13:28:40,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-25 13:28:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 13:28:40,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168. [2020-09-25 13:28:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 13:28:40,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2020-09-25 13:28:40,273 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 71 [2020-09-25 13:28:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:40,273 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2020-09-25 13:28:40,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 13:28:40,274 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2020-09-25 13:28:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 13:28:40,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:40,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:40,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:28:40,275 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash 181469332, now seen corresponding path program 2 times [2020-09-25 13:28:40,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:40,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128852251] [2020-09-25 13:28:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:44,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:45,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:45,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:28:45,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:28:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-25 13:28:45,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:45,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:28:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:28:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 13:28:45,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:45,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:45,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:45,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:45,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:45,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:45,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:45,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:45,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128852251] [2020-09-25 13:28:45,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:45,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 13:28:45,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599436613] [2020-09-25 13:28:45,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 13:28:45,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:45,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 13:28:45,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:28:45,882 INFO L87 Difference]: Start difference. First operand 168 states and 174 transitions. Second operand 18 states. [2020-09-25 13:28:47,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:47,287 INFO L93 Difference]: Finished difference Result 209 states and 216 transitions. [2020-09-25 13:28:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 13:28:47,288 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 13:28:47,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:47,290 INFO L225 Difference]: With dead ends: 209 [2020-09-25 13:28:47,290 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 13:28:47,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 13:28:47,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 13:28:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 152. [2020-09-25 13:28:47,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 13:28:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2020-09-25 13:28:47,298 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 78 [2020-09-25 13:28:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:47,298 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 157 transitions. [2020-09-25 13:28:47,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 13:28:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 157 transitions. [2020-09-25 13:28:47,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 13:28:47,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:47,299 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:47,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:28:47,300 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:47,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1069144387, now seen corresponding path program 2 times [2020-09-25 13:28:47,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:47,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264332455] [2020-09-25 13:28:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY