/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/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:01,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:01,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:02,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:02,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:02,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:02,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:02,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:02,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:02,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:02,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:02,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:02,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:02,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:02,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:02,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:02,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:02,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:02,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:02,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:02,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:02,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:02,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:02,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:02,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:02,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:02,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:02,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:02,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:02,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:02,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:02,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:02,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:02,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:02,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:02,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:02,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:02,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:02,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:02,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:02,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:02,063 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 13:28:02,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:02,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:02,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:02,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:02,120 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:02,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:02,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:02,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:02,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:02,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:02,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:02,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:02,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:02,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:02,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:02,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:02,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:02,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:02,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:02,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:02,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:02,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:02,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:02,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:02,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:02,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:02,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:02,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:02,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:02,127 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 13:28:02,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:02,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:02,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:02,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:02,706 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:02,707 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 13:28:02,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbbdb7b3b/f772427f81c64281815ed4b78e506f9e/FLAG42201b409 [2020-09-25 13:28:03,503 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:03,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 13:28:03,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbbdb7b3b/f772427f81c64281815ed4b78e506f9e/FLAG42201b409 [2020-09-25 13:28:03,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbbdb7b3b/f772427f81c64281815ed4b78e506f9e [2020-09-25 13:28:03,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:03,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:03,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:03,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:03,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:03,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:03" (1/1) ... [2020-09-25 13:28:03,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecced43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:03, skipping insertion in model container [2020-09-25 13:28:03,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:03" (1/1) ... [2020-09-25 13:28:03,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:03,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:04,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:04,275 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:04,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:04,431 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:04,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:04 WrapperNode [2020-09-25 13:28:04,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:04,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:04,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:04,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:04,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:04" (1/1) ... [2020-09-25 13:28:04,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:04" (1/1) ... [2020-09-25 13:28:04,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:04" (1/1) ... [2020-09-25 13:28:04,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:04" (1/1) ... [2020-09-25 13:28:04,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:04" (1/1) ... [2020-09-25 13:28:04,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:04" (1/1) ... [2020-09-25 13:28:04,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:04" (1/1) ... [2020-09-25 13:28:04,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:04,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:04,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:04,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:04,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:04" (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 13:28:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:04,599 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 13:28:04,599 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 13:28:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 13:28:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 13:28:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 13:28:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 13:28:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 13:28:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 13:28:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 13:28:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 13:28:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 13:28:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 13:28:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 13:28:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 13:28:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 13:28:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 13:28:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 13:28:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 13:28:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 13:28:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 13:28:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 13:28:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 13:28:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 13:28:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 13:28:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 13:28:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 13:28:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 13:28:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 13:28:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 13:28:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 13:28:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 13:28:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 13:28:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 13:28:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 13:28:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 13:28:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 13:28:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 13:28:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 13:28:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 13:28:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 13:28:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 13:28:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 13:28:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 13:28:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 13:28:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 13:28:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 13:28:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 13:28:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 13:28:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 13:28:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 13:28:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:28:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:28:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 13:28:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:28:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 13:28:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 13:28:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 13:28:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 13:28:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 13:28:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:28:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 13:28:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 13:28:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 13:28:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 13:28:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 13:28:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 13:28:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 13:28:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 13:28:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 13:28:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 13:28:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 13:28:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 13:28:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 13:28:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 13:28:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 13:28:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 13:28:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 13:28:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 13:28:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 13:28:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 13:28:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 13:28:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 13:28:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 13:28:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 13:28:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 13:28:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 13:28:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 13:28:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 13:28:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 13:28:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 13:28:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 13:28:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 13:28:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 13:28:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 13:28:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 13:28:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 13:28:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 13:28:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 13:28:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 13:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 13:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 13:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 13:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:28:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:28:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:28:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:28:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:28:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:05,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:05,297 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-25 13:28:05,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:05 BoogieIcfgContainer [2020-09-25 13:28:05,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:05,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:05,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:05,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:05,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:03" (1/3) ... [2020-09-25 13:28:05,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e029569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:05, skipping insertion in model container [2020-09-25 13:28:05,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:04" (2/3) ... [2020-09-25 13:28:05,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e029569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:05, skipping insertion in model container [2020-09-25 13:28:05,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:05" (3/3) ... [2020-09-25 13:28:05,314 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-25 13:28:05,327 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:05,338 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-25 13:28:05,362 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-25 13:28:05,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:05,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:05,397 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:05,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:05,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:05,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:05,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:05,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-25 13:28:05,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 13:28:05,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:05,437 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] [2020-09-25 13:28:05,438 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:05,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:05,447 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-25 13:28:05,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:05,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64349490] [2020-09-25 13:28:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:05,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:06,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:06,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 13:28:06,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-09-25 13:28:06,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:06,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:06,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:06,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:06,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:28:06,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:28:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:06,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:06,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:06,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:06,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:28:06,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:06,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:06,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:06,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:06,444 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 13:28:06,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64349490] [2020-09-25 13:28:06,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:06,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:28:06,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650517926] [2020-09-25 13:28:06,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:28:06,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:06,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:28:06,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:28:06,476 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 8 states. [2020-09-25 13:28:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:06,919 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2020-09-25 13:28:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:28:06,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-25 13:28:06,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:06,936 INFO L225 Difference]: With dead ends: 205 [2020-09-25 13:28:06,936 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 13:28:06,942 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 13:28:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 13:28:06,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-25 13:28:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 13:28:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-25 13:28:07,000 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 21 [2020-09-25 13:28:07,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:07,001 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-25 13:28:07,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:28:07,001 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-25 13:28:07,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 13:28:07,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:07,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:07,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:07,004 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:07,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:07,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-25 13:28:07,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:07,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143743510] [2020-09-25 13:28:07,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:07,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:07,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:28:07,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 13:28:07,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:07,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:28:07,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:28:07,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:07,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:07,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:07,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:07,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:07,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:28:07,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:07,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:07,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:07,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:07,288 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 13:28:07,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143743510] [2020-09-25 13:28:07,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:07,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:28:07,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409420374] [2020-09-25 13:28:07,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:28:07,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:07,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:28:07,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:07,293 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-25 13:28:07,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:07,551 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-25 13:28:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:28:07,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 13:28:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:07,554 INFO L225 Difference]: With dead ends: 120 [2020-09-25 13:28:07,554 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 13:28:07,555 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 13:28:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 13:28:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-25 13:28:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 13:28:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-25 13:28:07,568 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-25 13:28:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:07,569 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-25 13:28:07,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:28:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-25 13:28:07,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 13:28:07,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:07,571 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] [2020-09-25 13:28:07,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:28:07,572 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:07,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:07,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-25 13:28:07,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:07,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414099219] [2020-09-25 13:28:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:07,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:08,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:08,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 13:28:08,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:08,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-25 13:28:08,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:08,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 13:28:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 13:28:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:08,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:08,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:08,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:08,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:28:08,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:08,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:08,258 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 13:28:08,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414099219] [2020-09-25 13:28:08,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:08,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:28:08,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331579090] [2020-09-25 13:28:08,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:28:08,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:08,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:28:08,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:08,262 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-25 13:28:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:08,503 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-25 13:28:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:28:08,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 13:28:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:08,505 INFO L225 Difference]: With dead ends: 136 [2020-09-25 13:28:08,505 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 13:28:08,506 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 13:28:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 13:28:08,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-25 13:28:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 13:28:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 13:28:08,519 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-25 13:28:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:08,520 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 13:28:08,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:28:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 13:28:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 13:28:08,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:08,522 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] [2020-09-25 13:28:08,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:28:08,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:08,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:08,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-25 13:28:08,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:08,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765140787] [2020-09-25 13:28:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:08,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:09,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:09,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:28:09,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-09-25 13:28:09,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:09,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:28:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:28:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 13:28:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:10,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:10,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:10,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:10,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:10,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:10,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:10,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:10,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:28:10,044 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 13:28:10,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765140787] [2020-09-25 13:28:10,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:10,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:28:10,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118711501] [2020-09-25 13:28:10,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:28:10,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:10,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:28:10,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:28:10,048 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-25 13:28:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:11,351 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-25 13:28:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:28:11,352 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-25 13:28:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:11,354 INFO L225 Difference]: With dead ends: 166 [2020-09-25 13:28:11,355 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 13:28:11,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-25 13:28:11,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 13:28:11,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-25 13:28:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 13:28:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-25 13:28:11,382 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-25 13:28:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:11,382 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-25 13:28:11,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:28:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-25 13:28:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 13:28:11,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:11,388 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] [2020-09-25 13:28:11,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:28:11,388 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:11,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:11,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-25 13:28:11,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:11,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343408100] [2020-09-25 13:28:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:11,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:11,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:15,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:16,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:16,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 13:28:16,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:28:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4759 [2020-09-25 13:28:16,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:16,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:28:16,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:16,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 13:28:16,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:16,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:16,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:16,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:16,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:16,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:28:16,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:16,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:16,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:16,429 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 13:28:16,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343408100] [2020-09-25 13:28:16,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:16,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:28:16,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421870586] [2020-09-25 13:28:16,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:28:16,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:16,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:28:16,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:28:16,433 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 14 states. [2020-09-25 13:28:17,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:17,252 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2020-09-25 13:28:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:28:17,252 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-25 13:28:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:17,256 INFO L225 Difference]: With dead ends: 155 [2020-09-25 13:28:17,259 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 13:28:17,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2020-09-25 13:28:17,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 13:28:17,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 118. [2020-09-25 13:28:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-25 13:28:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2020-09-25 13:28:17,280 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 43 [2020-09-25 13:28:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:17,281 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2020-09-25 13:28:17,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:28:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2020-09-25 13:28:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 13:28:17,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:17,284 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, 1, 1] [2020-09-25 13:28:17,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:28:17,284 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:17,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:17,289 INFO L82 PathProgramCache]: Analyzing trace with hash -261235589, now seen corresponding path program 1 times [2020-09-25 13:28:17,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:17,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992322160] [2020-09-25 13:28:17,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:17,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:19,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:28:19,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:28:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1744 [2020-09-25 13:28:19,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:19,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:28:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 13:28:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 13:28:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:28:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:19,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:19,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:19,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:28:19,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:19,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:28:19,587 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 13:28:19,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992322160] [2020-09-25 13:28:19,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:19,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:28:19,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410896431] [2020-09-25 13:28:19,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:28:19,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:19,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:28:19,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:28:19,592 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 14 states. [2020-09-25 13:28:20,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:20,637 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2020-09-25 13:28:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:28:20,638 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-09-25 13:28:20,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:20,639 INFO L225 Difference]: With dead ends: 165 [2020-09-25 13:28:20,643 INFO L226 Difference]: Without dead ends: 138 [2020-09-25 13:28:20,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-09-25 13:28:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-25 13:28:20,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 113. [2020-09-25 13:28:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 13:28:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2020-09-25 13:28:20,661 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 47 [2020-09-25 13:28:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:20,662 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2020-09-25 13:28:20,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:28:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2020-09-25 13:28:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 13:28:20,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:20,664 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] [2020-09-25 13:28:20,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:28:20,664 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:20,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-25 13:28:20,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:20,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081355097] [2020-09-25 13:28:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:20,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:21,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:28:21,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:21,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-09-25 13:28:21,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:21,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:28:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:28:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:28:21,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:22,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:22,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:22,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:22,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:22,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:22,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:22,969 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 13:28:22,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081355097] [2020-09-25 13:28:22,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:22,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:28:22,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679639656] [2020-09-25 13:28:22,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:28:22,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:22,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:28:22,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:28:22,971 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 19 states. [2020-09-25 13:28:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:24,813 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-25 13:28:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 13:28:24,818 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-25 13:28:24,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:24,820 INFO L225 Difference]: With dead ends: 188 [2020-09-25 13:28:24,820 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 13:28:24,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 13:28:24,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 13:28:24,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 122. [2020-09-25 13:28:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 13:28:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2020-09-25 13:28:24,842 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 47 [2020-09-25 13:28:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:24,843 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2020-09-25 13:28:24,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 13:28:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2020-09-25 13:28:24,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 13:28:24,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:24,846 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] [2020-09-25 13:28:24,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:28:24,847 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:24,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:24,847 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-25 13:28:24,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:24,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519677473] [2020-09-25 13:28:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:25,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:28,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:29,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:28:29,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:28:29,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:28:29,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:29,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:29,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 13:28:29,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:28:29,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:29,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:29,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:29,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:29,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:29,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:29,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:29,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:29,969 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 13:28:29,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519677473] [2020-09-25 13:28:29,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:29,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:28:29,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986201411] [2020-09-25 13:28:29,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:28:29,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:29,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:28:29,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:29,971 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand 6 states. [2020-09-25 13:28:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:30,212 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-09-25 13:28:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:28:30,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 13:28:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:30,214 INFO L225 Difference]: With dead ends: 150 [2020-09-25 13:28:30,215 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 13:28:30,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 13:28:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 13:28:30,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2020-09-25 13:28:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 13:28:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2020-09-25 13:28:30,226 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 49 [2020-09-25 13:28:30,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:30,226 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2020-09-25 13:28:30,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:28:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2020-09-25 13:28:30,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 13:28:30,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:30,229 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] [2020-09-25 13:28:30,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:28:30,230 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:30,230 INFO L82 PathProgramCache]: Analyzing trace with hash -62360599, now seen corresponding path program 2 times [2020-09-25 13:28:30,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:30,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819891245] [2020-09-25 13:28:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:30,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:30,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 13:28:30,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:30,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 13:28:30,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:30,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:30,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:30,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:28:30,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:28:30,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:30,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:30,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:30,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:30,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:30,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:30,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:30,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:30,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:30,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:30,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:30,506 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 13:28:30,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819891245] [2020-09-25 13:28:30,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:30,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:28:30,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875026229] [2020-09-25 13:28:30,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:28:30,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:30,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:28:30,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:28:30,509 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand 7 states. [2020-09-25 13:28:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:30,823 INFO L93 Difference]: Finished difference Result 147 states and 154 transitions. [2020-09-25 13:28:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:28:30,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 13:28:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:30,825 INFO L225 Difference]: With dead ends: 147 [2020-09-25 13:28:30,825 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 13:28:30,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:28:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 13:28:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-25 13:28:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 13:28:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-25 13:28:30,833 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 50 [2020-09-25 13:28:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:30,833 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-25 13:28:30,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:28:30,833 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-25 13:28:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:28:30,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:30,834 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 13:28:30,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:28:30,835 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:30,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:30,835 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-25 13:28:30,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:30,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052832639] [2020-09-25 13:28:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:30,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:31,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 13:28:31,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:31,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-09-25 13:28:31,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:31,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:28:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:28:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:28:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:32,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:32,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:32,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:32,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:32,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:32,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:32,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052832639] [2020-09-25 13:28:32,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:32,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:28:32,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396939750] [2020-09-25 13:28:32,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:28:32,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:32,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:28:32,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:28:32,784 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 19 states. [2020-09-25 13:28:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:34,343 INFO L93 Difference]: Finished difference Result 186 states and 195 transitions. [2020-09-25 13:28:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 13:28:34,343 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-25 13:28:34,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:34,345 INFO L225 Difference]: With dead ends: 186 [2020-09-25 13:28:34,345 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 13:28:34,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 13:28:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 13:28:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 119. [2020-09-25 13:28:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 13:28:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-09-25 13:28:34,354 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 53 [2020-09-25 13:28:34,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:34,355 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-09-25 13:28:34,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 13:28:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-09-25 13:28:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 13:28:34,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:34,356 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] [2020-09-25 13:28:34,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:28:34,357 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:34,357 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-25 13:28:34,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:34,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270361333] [2020-09-25 13:28:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:35,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:37,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:38,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:28:38,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:28:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4607 [2020-09-25 13:28:38,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:38,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:28:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 13:28:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 13:28:38,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:39,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:39,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:39,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:39,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:39,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:39,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:39,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:39,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:39,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:39,336 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 13:28:39,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270361333] [2020-09-25 13:28:39,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:39,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:28:39,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530780171] [2020-09-25 13:28:39,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:28:39,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:39,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:28:39,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:28:39,338 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 15 states. [2020-09-25 13:28:40,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:40,381 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-25 13:28:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:28:40,382 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 13:28:40,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:40,383 INFO L225 Difference]: With dead ends: 188 [2020-09-25 13:28:40,383 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 13:28:40,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2020-09-25 13:28:40,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 13:28:40,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 135. [2020-09-25 13:28:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 13:28:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-09-25 13:28:40,391 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 56 [2020-09-25 13:28:40,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:40,392 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-09-25 13:28:40,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:28:40,392 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-09-25 13:28:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 13:28:40,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:40,393 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:40,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:28:40,394 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:40,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:40,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1025074422, now seen corresponding path program 1 times [2020-09-25 13:28:40,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:40,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81766] [2020-09-25 13:28:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:42,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 13:28:42,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:42,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1830 [2020-09-25 13:28:42,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:42,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:42,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 13:28:42,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:28:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 13:28:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:43,034 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-09-25 13:28:43,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:43,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:43,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:43,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:28:43,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:43,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:43,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:43,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:43,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:43,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81766] [2020-09-25 13:28:43,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:43,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 13:28:43,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394858709] [2020-09-25 13:28:43,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 13:28:43,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:43,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 13:28:43,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:28:43,493 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 25 states. [2020-09-25 13:28:44,106 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-09-25 13:28:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:46,579 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-09-25 13:28:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 13:28:46,579 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-09-25 13:28:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:46,581 INFO L225 Difference]: With dead ends: 163 [2020-09-25 13:28:46,581 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 13:28:46,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 13:28:46,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 13:28:46,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2020-09-25 13:28:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 13:28:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 13:28:46,590 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 60 [2020-09-25 13:28:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:46,591 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 13:28:46,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 13:28:46,591 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 13:28:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 13:28:46,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:46,592 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] [2020-09-25 13:28:46,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:28:46,593 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:46,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:46,593 INFO L82 PathProgramCache]: Analyzing trace with hash -412836324, now seen corresponding path program 2 times [2020-09-25 13:28:46,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:46,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858271693] [2020-09-25 13:28:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:51,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 13:28:51,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:28:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:28:51,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:51,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:28:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:28:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 13:28:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:51,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:51,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:51,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:51,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:51,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:51,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:51,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:51,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:51,955 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 13:28:51,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858271693] [2020-09-25 13:28:51,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:51,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:28:51,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050943531] [2020-09-25 13:28:51,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:28:51,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:51,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:28:51,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:28:51,957 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 17 states. [2020-09-25 13:28:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:53,114 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2020-09-25 13:28:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 13:28:53,114 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2020-09-25 13:28:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:53,116 INFO L225 Difference]: With dead ends: 147 [2020-09-25 13:28:53,116 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 13:28:53,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 13:28:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 13:28:53,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2020-09-25 13:28:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 13:28:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-09-25 13:28:53,123 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 63 [2020-09-25 13:28:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:53,124 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-09-25 13:28:53,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:28:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-09-25 13:28:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 13:28:53,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:53,125 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] [2020-09-25 13:28:53,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:28:53,125 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:53,125 INFO L82 PathProgramCache]: Analyzing trace with hash -80620955, now seen corresponding path program 1 times [2020-09-25 13:28:53,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:53,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554595488] [2020-09-25 13:28:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:53,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking...