/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:15:08,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:15:08,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:15:08,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:15:08,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:15:08,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:15:08,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:15:08,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:15:08,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:15:08,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:15:08,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:15:08,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:15:08,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:15:08,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:15:08,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:15:08,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:15:08,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:15:08,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:15:08,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:15:08,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:15:08,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:15:08,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:15:08,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:15:08,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:15:08,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:15:08,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:15:08,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:15:08,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:15:08,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:15:08,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:15:08,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:15:08,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:15:08,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:15:08,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:15:08,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:15:08,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:15:08,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:15:08,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:15:08,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:15:08,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:15:08,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:15:08,503 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 03:15:08,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:15:08,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:15:08,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:15:08,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:15:08,549 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:15:08,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:15:08,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:15:08,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:15:08,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:15:08,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:15:08,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:15:08,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:15:08,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:15:08,552 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:15:08,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:15:08,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:15:08,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:15:08,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:15:08,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:15:08,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:15:08,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:15:08,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:15:08,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:15:08,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:15:08,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:15:08,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:15:08,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:15:08,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:15:08,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:15:08,555 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:15:09,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:15:09,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:15:09,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:15:09,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:15:09,132 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:15:09,133 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 03:15:09,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d84f4dc0/ecd4bd99f65e4abea97a3dad199d8f5a/FLAG7e175baab [2020-09-25 03:15:09,853 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:15:09,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 03:15:09,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d84f4dc0/ecd4bd99f65e4abea97a3dad199d8f5a/FLAG7e175baab [2020-09-25 03:15:10,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d84f4dc0/ecd4bd99f65e4abea97a3dad199d8f5a [2020-09-25 03:15:10,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:15:10,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:15:10,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:10,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:15:10,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:15:10,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:10" (1/1) ... [2020-09-25 03:15:10,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e6d6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10, skipping insertion in model container [2020-09-25 03:15:10,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:10" (1/1) ... [2020-09-25 03:15:10,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:15:10,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:15:10,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:10,759 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:15:10,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:10,868 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:15:10,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10 WrapperNode [2020-09-25 03:15:10,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:10,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:15:10,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:15:10,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:15:10,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ... [2020-09-25 03:15:10,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ... [2020-09-25 03:15:10,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ... [2020-09-25 03:15:10,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ... [2020-09-25 03:15:10,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ... [2020-09-25 03:15:10,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ... [2020-09-25 03:15:10,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (1/1) ... [2020-09-25 03:15:10,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:15:10,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:15:10,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:15:10,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:15:10,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (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 03:15:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:15:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:15:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:15:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:15:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:15:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:15:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:15:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:15:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:15:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:15:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:15:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:15:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:15:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:15:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:15:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:15:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:15:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:15:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:15:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:15:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:15:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:15:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:15:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:15:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:15:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:15:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:15:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:15:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:15:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:15:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:15:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:15:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:15:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:15:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 03:15:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:15:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:15:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:15:11,053 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:15:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:15:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:15:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:15:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:15:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:15:11,054 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:15:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:15:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:15:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:15:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:15:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:15:11,055 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:15:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:15:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:15:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:15:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:15:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:15:11,056 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:15:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:15:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:15:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:15:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:15:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:15:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:15:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:15:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:15:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:15:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:15:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:15:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:15:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:15:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:15:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:15:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:15:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:15:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:15:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:15:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:15:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:15:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:15:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:15:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:15:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:15:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:15:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:15:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:15:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:15:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:15:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:15:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:15:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:15:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:15:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:15:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:15:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:15:11,733 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:15:11,734 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-25 03:15:11,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:11 BoogieIcfgContainer [2020-09-25 03:15:11,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:15:11,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:15:11,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:15:11,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:15:11,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:15:10" (1/3) ... [2020-09-25 03:15:11,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f85c0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:11, skipping insertion in model container [2020-09-25 03:15:11,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:10" (2/3) ... [2020-09-25 03:15:11,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f85c0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:11, skipping insertion in model container [2020-09-25 03:15:11,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:11" (3/3) ... [2020-09-25 03:15:11,765 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-25 03:15:11,782 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:15:11,795 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-25 03:15:11,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-25 03:15:11,866 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:15:11,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:15:11,868 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:15:11,868 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:15:11,868 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:15:11,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:15:11,868 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:15:11,868 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:15:11,909 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 03:15:11,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 03:15:11,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:11,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:11,920 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:11,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:11,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-09-25 03:15:11,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:11,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098400891] [2020-09-25 03:15:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:12,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:12,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 03:15:12,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:12,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-09-25 03:15:12,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:15:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 03:15:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:15:13,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:13,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:13,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:13,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:13,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:13,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 03:15:13,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:13,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:13,057 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 03:15:13,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098400891] [2020-09-25 03:15:13,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:13,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:15:13,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153803313] [2020-09-25 03:15:13,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:15:13,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:13,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:15:13,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:15:13,094 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 03:15:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:13,664 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2020-09-25 03:15:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:15:13,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-25 03:15:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:13,681 INFO L225 Difference]: With dead ends: 281 [2020-09-25 03:15:13,681 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 03:15:13,687 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 03:15:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 03:15:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-09-25 03:15:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 03:15:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-25 03:15:13,746 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 23 [2020-09-25 03:15:13,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:13,746 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-25 03:15:13,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:15:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-25 03:15:13,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 03:15:13,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:13,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:13,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:15:13,749 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:13,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:13,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-09-25 03:15:13,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:13,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589755304] [2020-09-25 03:15:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:13,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:13,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:13,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 03:15:13,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:13,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 03:15:13,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:13,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:13,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:15:13,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:15:13,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:14,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:14,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:14,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:14,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:15:14,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:14,104 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 03:15:14,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589755304] [2020-09-25 03:15:14,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:14,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:15:14,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348864933] [2020-09-25 03:15:14,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:15:14,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:14,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:15:14,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:14,110 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states. [2020-09-25 03:15:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:14,447 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-09-25 03:15:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:15:14,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 03:15:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:14,451 INFO L225 Difference]: With dead ends: 146 [2020-09-25 03:15:14,452 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 03:15:14,455 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 03:15:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 03:15:14,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-09-25 03:15:14,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 03:15:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-25 03:15:14,483 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-09-25 03:15:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:14,483 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-25 03:15:14,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:15:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-25 03:15:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:15:14,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:14,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:14,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:15:14,487 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:14,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:14,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-09-25 03:15:14,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:14,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266344789] [2020-09-25 03:15:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:15,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:15:15,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:15,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-09-25 03:15:15,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:15,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:15:15,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 03:15:15,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 03:15:15,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:15,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:15,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:15,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:15,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:15,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:15,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:15,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:15,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:15,328 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 03:15:15,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266344789] [2020-09-25 03:15:15,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:15,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:15:15,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930060334] [2020-09-25 03:15:15,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:15:15,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:15,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:15:15,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:15,332 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-09-25 03:15:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:15,726 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2020-09-25 03:15:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:15:15,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 03:15:15,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:15,728 INFO L225 Difference]: With dead ends: 140 [2020-09-25 03:15:15,728 INFO L226 Difference]: Without dead ends: 118 [2020-09-25 03:15:15,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:15:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-25 03:15:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2020-09-25 03:15:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 03:15:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-09-25 03:15:15,740 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 38 [2020-09-25 03:15:15,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:15,741 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-09-25 03:15:15,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:15:15,741 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-09-25 03:15:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:15:15,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:15,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:15,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:15:15,743 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:15,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-09-25 03:15:15,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:15,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642701634] [2020-09-25 03:15:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:15,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:15,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:15:15,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:15,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 03:15:15,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:15:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 03:15:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 03:15:15,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:15,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:16,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:16,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:16,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:15:16,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:16,013 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 03:15:16,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642701634] [2020-09-25 03:15:16,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:16,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:15:16,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001705530] [2020-09-25 03:15:16,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:15:16,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:16,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:15:16,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:15:16,016 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 5 states. [2020-09-25 03:15:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:16,212 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2020-09-25 03:15:16,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:15:16,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-25 03:15:16,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:16,214 INFO L225 Difference]: With dead ends: 115 [2020-09-25 03:15:16,214 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 03:15:16,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 03:15:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-09-25 03:15:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 03:15:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-25 03:15:16,223 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 38 [2020-09-25 03:15:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:16,223 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-25 03:15:16,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:15:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-25 03:15:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 03:15:16,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:16,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:16,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:15:16,226 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:16,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:16,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-09-25 03:15:16,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:16,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897642779] [2020-09-25 03:15:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:16,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:16,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:16,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 03:15:16,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 03:15:16,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 03:15:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:15:16,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:16,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:16,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:16,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:16,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:16,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:16,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:15:16,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:16,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:16,583 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 03:15:16,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897642779] [2020-09-25 03:15:16,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:16,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:15:16,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900402211] [2020-09-25 03:15:16,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:15:16,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:16,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:15:16,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:15:16,586 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 5 states. [2020-09-25 03:15:16,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:16,815 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2020-09-25 03:15:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:15:16,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-25 03:15:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:16,817 INFO L225 Difference]: With dead ends: 110 [2020-09-25 03:15:16,817 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 03:15:16,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 03:15:16,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2020-09-25 03:15:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 03:15:16,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-09-25 03:15:16,826 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 42 [2020-09-25 03:15:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:16,827 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-09-25 03:15:16,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:15:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-09-25 03:15:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 03:15:16,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:16,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:16,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:15:16,829 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:16,830 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-09-25 03:15:16,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:16,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042437713] [2020-09-25 03:15:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:16,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:18,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:18,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 03:15:18,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1573 [2020-09-25 03:15:18,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:15:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:15:18,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:18,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:18,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:18,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:15:18,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:18,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:18,603 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 03:15:18,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042437713] [2020-09-25 03:15:18,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:18,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 03:15:18,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453694671] [2020-09-25 03:15:18,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:15:18,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:18,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:15:18,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:15:18,606 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 13 states. [2020-09-25 03:15:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:19,242 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2020-09-25 03:15:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:15:19,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 03:15:19,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:19,244 INFO L225 Difference]: With dead ends: 148 [2020-09-25 03:15:19,245 INFO L226 Difference]: Without dead ends: 146 [2020-09-25 03:15:19,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:15:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-25 03:15:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 130. [2020-09-25 03:15:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-25 03:15:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2020-09-25 03:15:19,266 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 44 [2020-09-25 03:15:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:19,266 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2020-09-25 03:15:19,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:15:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2020-09-25 03:15:19,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 03:15:19,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:19,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:19,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:15:19,271 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:19,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:19,271 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-09-25 03:15:19,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:19,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008363653] [2020-09-25 03:15:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:19,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:22,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:24,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:24,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 03:15:24,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:15:24,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-09-25 03:15:24,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:15:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 03:15:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:15:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:24,894 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-09-25 03:15:25,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:25,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:25,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:25,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:25,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:15:25,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:25,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:25,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:25,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:25,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:25,444 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 03:15:25,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008363653] [2020-09-25 03:15:25,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:25,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 03:15:25,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648300168] [2020-09-25 03:15:25,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 03:15:25,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:25,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 03:15:25,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:15:25,447 INFO L87 Difference]: Start difference. First operand 130 states and 136 transitions. Second operand 17 states. [2020-09-25 03:15:25,868 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-09-25 03:15:26,174 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-09-25 03:15:26,479 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-09-25 03:15:26,930 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2020-09-25 03:15:27,267 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2020-09-25 03:15:27,564 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-09-25 03:15:27,883 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-09-25 03:15:28,216 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-09-25 03:15:28,566 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-09-25 03:15:28,848 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-09-25 03:15:29,107 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-09-25 03:15:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:29,353 INFO L93 Difference]: Finished difference Result 187 states and 195 transitions. [2020-09-25 03:15:29,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:15:29,354 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-09-25 03:15:29,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:29,355 INFO L225 Difference]: With dead ends: 187 [2020-09-25 03:15:29,356 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 03:15:29,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2020-09-25 03:15:29,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 03:15:29,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 147. [2020-09-25 03:15:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-09-25 03:15:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 154 transitions. [2020-09-25 03:15:29,368 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 154 transitions. Word has length 45 [2020-09-25 03:15:29,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:29,368 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 154 transitions. [2020-09-25 03:15:29,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 03:15:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 154 transitions. [2020-09-25 03:15:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 03:15:29,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:29,381 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, 1, 1] [2020-09-25 03:15:29,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:15:29,381 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:29,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash 888731196, now seen corresponding path program 1 times [2020-09-25 03:15:29,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:29,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873068019] [2020-09-25 03:15:29,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:31,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:31,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:15:31,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:15:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2353 [2020-09-25 03:15:31,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:15:31,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 03:15:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 03:15:31,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:32,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:32,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:32,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:32,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:15:32,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:32,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:32,322 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 03:15:32,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873068019] [2020-09-25 03:15:32,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:32,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 03:15:32,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359508981] [2020-09-25 03:15:32,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:15:32,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:32,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:15:32,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:15:32,325 INFO L87 Difference]: Start difference. First operand 147 states and 154 transitions. Second operand 15 states. [2020-09-25 03:15:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:33,466 INFO L93 Difference]: Finished difference Result 199 states and 208 transitions. [2020-09-25 03:15:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:15:33,467 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-09-25 03:15:33,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:33,469 INFO L225 Difference]: With dead ends: 199 [2020-09-25 03:15:33,469 INFO L226 Difference]: Without dead ends: 172 [2020-09-25 03:15:33,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-09-25 03:15:33,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-25 03:15:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 139. [2020-09-25 03:15:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-25 03:15:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2020-09-25 03:15:33,477 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 49 [2020-09-25 03:15:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:33,477 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2020-09-25 03:15:33,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:15:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2020-09-25 03:15:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:15:33,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:33,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:33,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:15:33,479 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:33,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1939042985, now seen corresponding path program 2 times [2020-09-25 03:15:33,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:33,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479067498] [2020-09-25 03:15:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:33,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:33,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:15:33,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:33,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 03:15:33,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:15:33,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:15:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:15:33,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:33,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:33,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:33,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:33,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:33,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:15:33,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:33,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:33,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:33,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:33,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:33,897 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 03:15:33,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479067498] [2020-09-25 03:15:33,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:33,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:15:33,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690891252] [2020-09-25 03:15:33,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:15:33,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:33,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:15:33,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:15:33,901 INFO L87 Difference]: Start difference. First operand 139 states and 145 transitions. Second operand 7 states. [2020-09-25 03:15:34,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:34,236 INFO L93 Difference]: Finished difference Result 167 states and 174 transitions. [2020-09-25 03:15:34,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:15:34,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 03:15:34,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:34,238 INFO L225 Difference]: With dead ends: 167 [2020-09-25 03:15:34,238 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 03:15:34,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:15:34,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 03:15:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2020-09-25 03:15:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-25 03:15:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2020-09-25 03:15:34,245 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 52 [2020-09-25 03:15:34,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:34,245 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2020-09-25 03:15:34,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:15:34,245 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2020-09-25 03:15:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 03:15:34,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:34,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:34,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:15:34,247 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:34,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:34,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-09-25 03:15:34,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:34,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316851259] [2020-09-25 03:15:34,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:38,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 03:15:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:15:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4273 [2020-09-25 03:15:38,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:15:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 03:15:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:38,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:38,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:38,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:38,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:38,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:38,853 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 03:15:38,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316851259] [2020-09-25 03:15:38,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:38,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-25 03:15:38,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373748371] [2020-09-25 03:15:38,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 03:15:38,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:38,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 03:15:38,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:15:38,857 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand 17 states. [2020-09-25 03:15:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:39,683 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-09-25 03:15:39,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:15:39,684 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-09-25 03:15:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:39,685 INFO L225 Difference]: With dead ends: 133 [2020-09-25 03:15:39,685 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 03:15:39,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=663, Unknown=0, NotChecked=0, Total=930 [2020-09-25 03:15:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 03:15:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 95. [2020-09-25 03:15:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 03:15:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2020-09-25 03:15:39,694 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 54 [2020-09-25 03:15:39,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:39,694 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2020-09-25 03:15:39,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 03:15:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2020-09-25 03:15:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 03:15:39,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:39,697 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:39,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:15:39,697 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:39,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:39,698 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-09-25 03:15:39,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:39,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772663251] [2020-09-25 03:15:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:39,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:40,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:40,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 03:15:40,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-09-25 03:15:40,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:15:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:15:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:15:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:41,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:41,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:41,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:41,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:41,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:15:41,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:41,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:41,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:41,105 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 03:15:41,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772663251] [2020-09-25 03:15:41,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:41,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 03:15:41,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571829578] [2020-09-25 03:15:41,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 03:15:41,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:41,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 03:15:41,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:15:41,108 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand 17 states. [2020-09-25 03:15:42,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:42,629 INFO L93 Difference]: Finished difference Result 175 states and 181 transitions. [2020-09-25 03:15:42,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:15:42,630 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-25 03:15:42,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:42,631 INFO L225 Difference]: With dead ends: 175 [2020-09-25 03:15:42,631 INFO L226 Difference]: Without dead ends: 172 [2020-09-25 03:15:42,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-09-25 03:15:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-25 03:15:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 128. [2020-09-25 03:15:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 03:15:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-09-25 03:15:42,640 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 55 [2020-09-25 03:15:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:42,640 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-09-25 03:15:42,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 03:15:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-09-25 03:15:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 03:15:42,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:42,642 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:42,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:15:42,642 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:42,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:42,643 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-09-25 03:15:42,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:42,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485317869] [2020-09-25 03:15:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:42,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:45,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:45,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 03:15:45,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:45,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2432 [2020-09-25 03:15:45,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 03:15:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:15:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:15:45,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:45,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:45,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:45,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:45,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:45,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:45,865 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 03:15:45,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485317869] [2020-09-25 03:15:45,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:45,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 03:15:45,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932669284] [2020-09-25 03:15:45,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 03:15:45,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:45,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 03:15:45,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-09-25 03:15:45,868 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 22 states. [2020-09-25 03:15:47,216 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-09-25 03:15:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:48,135 INFO L93 Difference]: Finished difference Result 205 states and 212 transitions. [2020-09-25 03:15:48,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 03:15:48,136 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-09-25 03:15:48,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:48,138 INFO L225 Difference]: With dead ends: 205 [2020-09-25 03:15:48,138 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 03:15:48,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 03:15:48,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 03:15:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2020-09-25 03:15:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 03:15:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2020-09-25 03:15:48,147 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 65 [2020-09-25 03:15:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:48,148 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2020-09-25 03:15:48,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 03:15:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2020-09-25 03:15:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 03:15:48,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:48,149 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:48,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 03:15:48,150 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:48,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:48,151 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-09-25 03:15:48,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:48,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75189842] [2020-09-25 03:15:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:48,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:50,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:53,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:53,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:15:53,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:15:53,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-09-25 03:15:53,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:15:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 03:15:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:15:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:53,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:53,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:53,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:53,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:53,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:53,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:53,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:53,818 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 03:15:53,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75189842] [2020-09-25 03:15:53,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:53,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:15:53,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193434639] [2020-09-25 03:15:53,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:15:53,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:53,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:15:53,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:15:53,823 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 16 states. [2020-09-25 03:15:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:54,974 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2020-09-25 03:15:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:15:54,974 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 03:15:54,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:54,976 INFO L225 Difference]: With dead ends: 229 [2020-09-25 03:15:54,977 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 03:15:54,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:15:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 03:15:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168. [2020-09-25 03:15:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 03:15:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2020-09-25 03:15:54,986 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 71 [2020-09-25 03:15:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:54,986 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2020-09-25 03:15:54,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:15:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2020-09-25 03:15:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 03:15:54,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:54,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:54,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 03:15:54,988 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:54,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:54,988 INFO L82 PathProgramCache]: Analyzing trace with hash 181469332, now seen corresponding path program 2 times [2020-09-25 03:15:54,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:54,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502326356] [2020-09-25 03:15:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking...