/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:50:07,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:50:07,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:50:07,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:50:07,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:50:07,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:50:07,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:50:07,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:50:07,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:50:07,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:50:07,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:50:07,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:50:07,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:50:07,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:50:07,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:50:07,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:50:07,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:50:07,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:50:07,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:50:07,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:50:07,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:50:07,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:50:07,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:50:07,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:50:07,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:50:07,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:50:07,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:50:07,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:50:07,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:50:07,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:50:07,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:50:07,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:50:07,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:50:07,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:50:07,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:50:07,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:50:07,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:50:07,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:50:07,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:50:07,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:50:07,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:50:07,372 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 07:50:07,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:50:07,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:50:07,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:50:07,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:50:07,400 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:50:07,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:50:07,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:50:07,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:50:07,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:50:07,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:50:07,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:50:07,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:50:07,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:50:07,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:50:07,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:50:07,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:50:07,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:50:07,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:50:07,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:50:07,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:50:07,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:50:07,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:07,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:50:07,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:50:07,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:50:07,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:50:07,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:50:07,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:50:07,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:50:07,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:50:07,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:50:07,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:50:07,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:50:07,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:50:07,905 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:50:07,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 07:50:07,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/435b50613/89d65147ff09467c8f4a91afef92e6b1/FLAG10b4d7728 [2020-09-25 07:50:08,589 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:50:08,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 07:50:08,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/435b50613/89d65147ff09467c8f4a91afef92e6b1/FLAG10b4d7728 [2020-09-25 07:50:08,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/435b50613/89d65147ff09467c8f4a91afef92e6b1 [2020-09-25 07:50:08,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:50:08,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:50:08,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:08,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:50:08,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:50:08,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:08" (1/1) ... [2020-09-25 07:50:08,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d693c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:08, skipping insertion in model container [2020-09-25 07:50:08,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:08" (1/1) ... [2020-09-25 07:50:08,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:50:08,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:50:09,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:09,432 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:50:09,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:09,567 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:50:09,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:09 WrapperNode [2020-09-25 07:50:09,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:09,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:50:09,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:50:09,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:50:09,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:09" (1/1) ... [2020-09-25 07:50:09,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:09" (1/1) ... [2020-09-25 07:50:09,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:09" (1/1) ... [2020-09-25 07:50:09,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:09" (1/1) ... [2020-09-25 07:50:09,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:09" (1/1) ... [2020-09-25 07:50:09,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:09" (1/1) ... [2020-09-25 07:50:09,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:09" (1/1) ... [2020-09-25 07:50:09,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:50:09,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:50:09,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:50:09,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:50:09,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:09" (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 07:50:09,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:50:09,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:50:09,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:50:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 07:50:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 07:50:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 07:50:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 07:50:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 07:50:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 07:50:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 07:50:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 07:50:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 07:50:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 07:50:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 07:50:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 07:50:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 07:50:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 07:50:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 07:50:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 07:50:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 07:50:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 07:50:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 07:50:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 07:50:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 07:50:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 07:50:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 07:50:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 07:50:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 07:50:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 07:50:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 07:50:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 07:50:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 07:50:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 07:50:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 07:50:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 07:50:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 07:50:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 07:50:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 07:50:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 07:50:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 07:50:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 07:50:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 07:50:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 07:50:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 07:50:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 07:50:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 07:50:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 07:50:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 07:50:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 07:50:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 07:50:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 07:50:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 07:50:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 07:50:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:50:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 07:50:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 07:50:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:50:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 07:50:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 07:50:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 07:50:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 07:50:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 07:50:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 07:50:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 07:50:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 07:50:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 07:50:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:50:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 07:50:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 07:50:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 07:50:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 07:50:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 07:50:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 07:50:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 07:50:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 07:50:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 07:50:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 07:50:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 07:50:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 07:50:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 07:50:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 07:50:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 07:50:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 07:50:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 07:50:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 07:50:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 07:50:09,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 07:50:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 07:50:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 07:50:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 07:50:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 07:50:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 07:50:09,729 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 07:50:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 07:50:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 07:50:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 07:50:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 07:50:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 07:50:09,730 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 07:50:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 07:50:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 07:50:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 07:50:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 07:50:09,731 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 07:50:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 07:50:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 07:50:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:50:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:50:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:50:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:50:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:50:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:50:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:50:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:50:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:50:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:50:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:50:10,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:50:10,304 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-25 07:50:10,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:10 BoogieIcfgContainer [2020-09-25 07:50:10,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:50:10,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:50:10,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:50:10,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:50:10,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:50:08" (1/3) ... [2020-09-25 07:50:10,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1515ba61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:10, skipping insertion in model container [2020-09-25 07:50:10,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:09" (2/3) ... [2020-09-25 07:50:10,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1515ba61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:10, skipping insertion in model container [2020-09-25 07:50:10,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:10" (3/3) ... [2020-09-25 07:50:10,324 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-25 07:50:10,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:50:10,346 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-25 07:50:10,369 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-25 07:50:10,400 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:50:10,401 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:50:10,401 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:50:10,401 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:50:10,401 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:50:10,401 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:50:10,402 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:50:10,402 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:50:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-25 07:50:10,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 07:50:10,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:10,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:10,438 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:10,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:10,446 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-25 07:50:10,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:10,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48149837] [2020-09-25 07:50:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:10,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:11,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:11,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 07:50:11,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-09-25 07:50:11,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:11,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:50:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:50:11,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:11,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:11,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:11,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:11,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:11,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:50:11,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:11,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:11,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:11,377 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 07:50:11,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48149837] [2020-09-25 07:50:11,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:11,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:50:11,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782765570] [2020-09-25 07:50:11,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:50:11,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:11,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:50:11,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:50:11,407 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-09-25 07:50:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:11,697 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2020-09-25 07:50:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:50:11,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-25 07:50:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:11,717 INFO L225 Difference]: With dead ends: 157 [2020-09-25 07:50:11,717 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 07:50:11,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:50:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 07:50:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 07:50:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 07:50:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-09-25 07:50:11,764 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 21 [2020-09-25 07:50:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:11,764 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-09-25 07:50:11,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:50:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-09-25 07:50:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 07:50:11,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:11,766 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 07:50:11,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:50:11,767 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:11,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:11,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1476818129, now seen corresponding path program 1 times [2020-09-25 07:50:11,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:11,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686223692] [2020-09-25 07:50:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:12,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:12,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:50:12,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:12,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 07:50:12,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:12,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:12,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:50:12,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:12,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:50:12,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:12,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:12,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:12,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:50:12,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:12,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:12,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:12,106 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 07:50:12,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686223692] [2020-09-25 07:50:12,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:12,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:50:12,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433504140] [2020-09-25 07:50:12,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:50:12,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:12,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:50:12,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:50:12,111 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2020-09-25 07:50:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:12,366 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2020-09-25 07:50:12,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:50:12,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-25 07:50:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:12,368 INFO L225 Difference]: With dead ends: 92 [2020-09-25 07:50:12,368 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 07:50:12,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:50:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 07:50:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-25 07:50:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 07:50:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-25 07:50:12,381 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 23 [2020-09-25 07:50:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:12,382 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-25 07:50:12,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:50:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-25 07:50:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 07:50:12,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:12,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:12,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:50:12,385 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:12,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-25 07:50:12,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:12,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088653676] [2020-09-25 07:50:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:12,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:50:12,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 07:50:12,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:12,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:50:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:50:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:12,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:12,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:12,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:12,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:12,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:50:12,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:12,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:12,670 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 07:50:12,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088653676] [2020-09-25 07:50:12,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:12,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:50:12,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733614539] [2020-09-25 07:50:12,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:50:12,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:12,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:50:12,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:50:12,672 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-25 07:50:12,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:12,889 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-25 07:50:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:50:12,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 07:50:12,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:12,892 INFO L225 Difference]: With dead ends: 120 [2020-09-25 07:50:12,892 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 07:50:12,892 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 07:50:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 07:50:12,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-25 07:50:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 07:50:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-25 07:50:12,904 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-25 07:50:12,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:12,904 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-25 07:50:12,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:50:12,905 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-25 07:50:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 07:50:12,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:12,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:12,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:50:12,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:12,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:12,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-25 07:50:12,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:12,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056521504] [2020-09-25 07:50:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:13,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:13,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 07:50:13,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:13,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-25 07:50:13,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:13,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 07:50:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 07:50:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:13,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:13,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:13,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:13,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:50:13,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:13,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:13,557 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 07:50:13,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056521504] [2020-09-25 07:50:13,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:13,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:50:13,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017487773] [2020-09-25 07:50:13,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:50:13,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:13,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:50:13,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:50:13,562 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-25 07:50:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:13,807 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-25 07:50:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:50:13,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 07:50:13,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:13,809 INFO L225 Difference]: With dead ends: 136 [2020-09-25 07:50:13,809 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 07:50:13,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:50:13,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 07:50:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-25 07:50:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 07:50:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 07:50:13,830 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-25 07:50:13,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:13,832 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 07:50:13,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:50:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 07:50:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 07:50:13,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:13,834 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:13,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:50:13,835 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:13,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:13,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-25 07:50:13,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:13,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736943287] [2020-09-25 07:50:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:13,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:14,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:14,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 07:50:14,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:14,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-09-25 07:50:14,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:14,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:50:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:50:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:50:14,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:15,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:15,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:15,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:15,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:50:15,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:15,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:15,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:15,500 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 07:50:15,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736943287] [2020-09-25 07:50:15,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:15,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 07:50:15,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141399170] [2020-09-25 07:50:15,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 07:50:15,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:15,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 07:50:15,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:50:15,503 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-25 07:50:16,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:16,700 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-25 07:50:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:50:16,701 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-25 07:50:16,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:16,703 INFO L225 Difference]: With dead ends: 166 [2020-09-25 07:50:16,703 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 07:50:16,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-25 07:50:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 07:50:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-25 07:50:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 07:50:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-25 07:50:16,726 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-25 07:50:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:16,727 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-25 07:50:16,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 07:50:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-25 07:50:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 07:50:16,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:16,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:16,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:50:16,733 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:16,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:16,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-25 07:50:16,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:16,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041374885] [2020-09-25 07:50:16,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:16,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:17,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:18,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:18,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:18,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:20,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:21,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:21,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 07:50:21,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:50:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4544 [2020-09-25 07:50:21,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:21,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:50:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:50:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:50:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:21,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:21,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:21,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:21,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:21,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:50:21,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:21,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:21,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:21,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:21,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041374885] [2020-09-25 07:50:21,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:21,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:50:21,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993207812] [2020-09-25 07:50:21,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:50:21,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:50:21,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:50:21,429 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 7 states. [2020-09-25 07:50:21,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:21,840 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2020-09-25 07:50:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:50:21,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 07:50:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:21,843 INFO L225 Difference]: With dead ends: 133 [2020-09-25 07:50:21,846 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 07:50:21,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:50:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 07:50:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-25 07:50:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 07:50:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-09-25 07:50:21,869 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 43 [2020-09-25 07:50:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:21,869 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-09-25 07:50:21,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:50:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-09-25 07:50:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 07:50:21,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:21,874 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:21,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:50:21,874 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:21,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:21,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-25 07:50:21,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:21,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486884636] [2020-09-25 07:50:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:23,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:23,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:50:23,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:23,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1300 [2020-09-25 07:50:23,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:23,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:50:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:50:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 07:50:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:50:24,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:24,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:24,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:24,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:24,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:50:24,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:24,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:24,245 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 07:50:24,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486884636] [2020-09-25 07:50:24,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:24,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 07:50:24,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420072123] [2020-09-25 07:50:24,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 07:50:24,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:24,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 07:50:24,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:50:24,248 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 19 states. [2020-09-25 07:50:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:25,903 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2020-09-25 07:50:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 07:50:25,905 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-25 07:50:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:25,906 INFO L225 Difference]: With dead ends: 169 [2020-09-25 07:50:25,906 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 07:50:25,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 07:50:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 07:50:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 103. [2020-09-25 07:50:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 07:50:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 07:50:25,915 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 47 [2020-09-25 07:50:25,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:25,916 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 07:50:25,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 07:50:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 07:50:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 07:50:25,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:25,917 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:25,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:50:25,918 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:25,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:25,918 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-25 07:50:25,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:25,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349763811] [2020-09-25 07:50:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:25,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:26,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:30,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:30,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:50:30,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:50:30,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 07:50:30,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:30,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 07:50:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:50:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:31,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:31,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:31,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:31,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:31,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:31,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:50:31,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349763811] [2020-09-25 07:50:31,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:31,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:50:31,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184665953] [2020-09-25 07:50:31,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:50:31,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:31,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:50:31,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:50:31,037 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 6 states. [2020-09-25 07:50:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:31,207 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2020-09-25 07:50:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:50:31,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 07:50:31,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:31,209 INFO L225 Difference]: With dead ends: 131 [2020-09-25 07:50:31,209 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 07:50:31,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:50:31,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 07:50:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 07:50:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 07:50:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-25 07:50:31,216 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 49 [2020-09-25 07:50:31,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:31,216 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-25 07:50:31,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:50:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-25 07:50:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 07:50:31,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:31,218 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:31,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:50:31,218 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:31,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:31,219 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-25 07:50:31,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:31,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124038732] [2020-09-25 07:50:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:31,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:32,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:32,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 07:50:32,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:32,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-09-25 07:50:32,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:32,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:32,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:50:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:50:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:50:32,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:33,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:33,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:33,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:33,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:33,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:33,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:33,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:33,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:33,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124038732] [2020-09-25 07:50:33,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:33,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 07:50:33,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170093040] [2020-09-25 07:50:33,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 07:50:33,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:33,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 07:50:33,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:50:33,207 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 19 states. [2020-09-25 07:50:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:34,613 INFO L93 Difference]: Finished difference Result 186 states and 195 transitions. [2020-09-25 07:50:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 07:50:34,614 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-25 07:50:34,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:34,616 INFO L225 Difference]: With dead ends: 186 [2020-09-25 07:50:34,616 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 07:50:34,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 07:50:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 07:50:34,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 119. [2020-09-25 07:50:34,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 07:50:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-09-25 07:50:34,624 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 53 [2020-09-25 07:50:34,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:34,625 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-09-25 07:50:34,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 07:50:34,625 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-09-25 07:50:34,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 07:50:34,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:34,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:34,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:50:34,627 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:34,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:34,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-25 07:50:34,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:34,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480081536] [2020-09-25 07:50:34,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:35,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:35,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:36,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:39,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:39,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 07:50:39,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:50:39,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4364 [2020-09-25 07:50:39,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:39,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 07:50:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 07:50:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 07:50:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:39,991 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 67 [2020-09-25 07:50:40,199 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-09-25 07:50:40,511 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-09-25 07:50:40,841 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-09-25 07:50:41,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:41,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:41,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:41,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:41,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:41,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:41,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:41,440 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 07:50:41,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480081536] [2020-09-25 07:50:41,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:41,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 07:50:41,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450432873] [2020-09-25 07:50:41,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 07:50:41,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:41,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 07:50:41,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-09-25 07:50:41,444 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 22 states. [2020-09-25 07:50:42,097 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2020-09-25 07:50:42,327 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2020-09-25 07:50:42,557 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2020-09-25 07:50:42,928 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2020-09-25 07:50:43,182 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2020-09-25 07:50:43,370 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-09-25 07:50:43,575 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-25 07:50:43,843 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-09-25 07:50:45,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:45,234 INFO L93 Difference]: Finished difference Result 180 states and 189 transitions. [2020-09-25 07:50:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 07:50:45,234 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2020-09-25 07:50:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:45,235 INFO L225 Difference]: With dead ends: 180 [2020-09-25 07:50:45,235 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 07:50:45,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=318, Invalid=1752, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 07:50:45,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 07:50:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 143. [2020-09-25 07:50:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-25 07:50:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2020-09-25 07:50:45,244 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 56 [2020-09-25 07:50:45,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:45,245 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2020-09-25 07:50:45,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 07:50:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2020-09-25 07:50:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 07:50:45,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:45,246 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] [2020-09-25 07:50:45,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 07:50:45,246 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:45,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1979586344, now seen corresponding path program 1 times [2020-09-25 07:50:45,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:45,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952096846] [2020-09-25 07:50:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:45,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:45,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:45,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:47,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:50,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:50:50,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:50:50,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:50:50,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:50,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:50:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 07:50:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 07:50:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:50,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:50,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:50,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:50,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:50,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:50,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:50,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:50,632 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 07:50:50,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952096846] [2020-09-25 07:50:50,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:50,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 07:50:50,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002185828] [2020-09-25 07:50:50,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 07:50:50,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:50,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 07:50:50,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:50:50,634 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 15 states. [2020-09-25 07:50:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:51,617 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2020-09-25 07:50:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 07:50:51,618 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-09-25 07:50:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:51,619 INFO L225 Difference]: With dead ends: 193 [2020-09-25 07:50:51,620 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 07:50:51,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2020-09-25 07:50:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 07:50:51,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 135. [2020-09-25 07:50:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 07:50:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-09-25 07:50:51,629 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 60 [2020-09-25 07:50:51,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:51,630 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-09-25 07:50:51,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 07:50:51,630 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-09-25 07:50:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 07:50:51,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:51,631 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:51,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 07:50:51,631 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:51,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1025074422, now seen corresponding path program 1 times [2020-09-25 07:50:51,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:51,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448024685] [2020-09-25 07:50:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:53,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:53,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:50:53,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1614 [2020-09-25 07:50:53,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:53,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 07:50:53,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:50:53,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:50:53,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:53,998 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-09-25 07:50:54,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:54,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:54,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:54,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:54,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:54,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:50:54,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:54,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:54,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:54,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448024685] [2020-09-25 07:50:54,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:54,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 07:50:54,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635292414] [2020-09-25 07:50:54,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 07:50:54,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:54,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 07:50:54,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-09-25 07:50:54,445 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 25 states. [2020-09-25 07:50:55,030 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-09-25 07:50:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:57,420 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-09-25 07:50:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 07:50:57,421 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-09-25 07:50:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:57,422 INFO L225 Difference]: With dead ends: 163 [2020-09-25 07:50:57,422 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 07:50:57,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 07:50:57,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 07:50:57,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2020-09-25 07:50:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 07:50:57,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 07:50:57,429 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 60 [2020-09-25 07:50:57,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:57,430 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 07:50:57,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 07:50:57,430 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 07:50:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 07:50:57,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:57,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:57,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 07:50:57,431 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:57,432 INFO L82 PathProgramCache]: Analyzing trace with hash -412836324, now seen corresponding path program 2 times [2020-09-25 07:50:57,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:57,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656067785] [2020-09-25 07:50:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:58,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking...