/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:32:34,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:32:34,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:32:34,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:32:34,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:32:34,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:32:34,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:32:34,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:32:34,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:32:34,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:32:34,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:32:34,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:32:34,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:32:34,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:32:34,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:32:34,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:32:34,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:32:34,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:32:34,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:32:34,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:32:34,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:32:34,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:32:34,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:32:34,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:32:34,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:32:34,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:32:34,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:32:34,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:32:34,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:32:34,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:32:34,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:32:34,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:32:34,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:32:34,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:32:34,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:32:34,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:32:34,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:32:34,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:32:34,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:32:34,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:32:34,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:32:34,517 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 05:32:34,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:32:34,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:32:34,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:32:34,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:32:34,546 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:32:34,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:32:34,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:32:34,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:32:34,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:32:34,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:32:34,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:32:34,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:32:34,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:32:34,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:32:34,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:32:34,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:32:34,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:32:34,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:32:34,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:32:34,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:32:34,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:32:34,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:34,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:32:34,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:32:34,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:32:34,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:32:34,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:32:34,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:32:34,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:32:34,551 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:32:35,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:32:35,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:32:35,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:32:35,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:32:35,058 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:32:35,060 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 05:32:35,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ff2b91cd/01e3d16ad61142deb2bb011e657d9a7a/FLAG340c30b9b [2020-09-25 05:32:35,831 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:32:35,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 05:32:35,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ff2b91cd/01e3d16ad61142deb2bb011e657d9a7a/FLAG340c30b9b [2020-09-25 05:32:36,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ff2b91cd/01e3d16ad61142deb2bb011e657d9a7a [2020-09-25 05:32:36,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:32:36,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:32:36,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:36,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:32:36,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:32:36,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:36" (1/1) ... [2020-09-25 05:32:36,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36, skipping insertion in model container [2020-09-25 05:32:36,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:36" (1/1) ... [2020-09-25 05:32:36,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:32:36,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:32:36,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:36,668 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:32:36,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:36,785 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:32:36,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36 WrapperNode [2020-09-25 05:32:36,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:36,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:32:36,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:32:36,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:32:36,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36" (1/1) ... [2020-09-25 05:32:36,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36" (1/1) ... [2020-09-25 05:32:36,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36" (1/1) ... [2020-09-25 05:32:36,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36" (1/1) ... [2020-09-25 05:32:36,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36" (1/1) ... [2020-09-25 05:32:36,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36" (1/1) ... [2020-09-25 05:32:36,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36" (1/1) ... [2020-09-25 05:32:36,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:32:36,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:32:36,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:32:36,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:32:36,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36" (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 05:32:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:32:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:32:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 05:32:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 05:32:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 05:32:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:32:36,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:32:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:32:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 05:32:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 05:32:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 05:32:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 05:32:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 05:32:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 05:32:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 05:32:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 05:32:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 05:32:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 05:32:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 05:32:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 05:32:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 05:32:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 05:32:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 05:32:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 05:32:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 05:32:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 05:32:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 05:32:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 05:32:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 05:32:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 05:32:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 05:32:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 05:32:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 05:32:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 05:32:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 05:32:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 05:32:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 05:32:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 05:32:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 05:32:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 05:32:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 05:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 05:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 05:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 05:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 05:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 05:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 05:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 05:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 05:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 05:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 05:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 05:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 05:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 05:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 05:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 05:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 05:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 05:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 05:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 05:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 05:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 05:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:32:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 05:32:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 05:32:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 05:32:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 05:32:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 05:32:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:32:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 05:32:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 05:32:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 05:32:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:32:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 05:32:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 05:32:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 05:32:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 05:32:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 05:32:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 05:32:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 05:32:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 05:32:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 05:32:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 05:32:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 05:32:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 05:32:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 05:32:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 05:32:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 05:32:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 05:32:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 05:32:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 05:32:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 05:32:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 05:32:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 05:32:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 05:32:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 05:32:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 05:32:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 05:32:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 05:32:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 05:32:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 05:32:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 05:32:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 05:32:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 05:32:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 05:32:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 05:32:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 05:32:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 05:32:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 05:32:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 05:32:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 05:32:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 05:32:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 05:32:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:32:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:32:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:32:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:32:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:32:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:32:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:32:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:32:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:32:37,429 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 05:32:37,911 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:32:37,911 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 05:32:37,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:37 BoogieIcfgContainer [2020-09-25 05:32:37,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:32:37,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:32:37,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:32:37,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:32:37,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:32:36" (1/3) ... [2020-09-25 05:32:37,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431b4b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:37, skipping insertion in model container [2020-09-25 05:32:37,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:36" (2/3) ... [2020-09-25 05:32:37,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431b4b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:37, skipping insertion in model container [2020-09-25 05:32:37,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:37" (3/3) ... [2020-09-25 05:32:37,929 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 05:32:37,943 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:32:37,955 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:32:37,980 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:32:38,015 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:32:38,015 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:32:38,016 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:32:38,016 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:32:38,016 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:32:38,016 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:32:38,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:32:38,017 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:32:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 05:32:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 05:32:38,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:38,060 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] [2020-09-25 05:32:38,061 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:38,070 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 05:32:38,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:38,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872993478] [2020-09-25 05:32:38,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:39,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:39,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:32:39,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:32:39,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 919 [2020-09-25 05:32:39,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:39,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 05:32:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:32:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:39,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:39,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:39,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:32:39,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:39,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:39,310 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 05:32:39,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872993478] [2020-09-25 05:32:39,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:39,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:32:39,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800628779] [2020-09-25 05:32:39,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:32:39,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:39,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:32:39,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:32:39,347 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-09-25 05:32:39,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:39,821 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-09-25 05:32:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:32:39,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 05:32:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:39,841 INFO L225 Difference]: With dead ends: 342 [2020-09-25 05:32:39,841 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 05:32:39,848 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 05:32:39,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 05:32:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-25 05:32:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-25 05:32:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-09-25 05:32:39,922 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-09-25 05:32:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:39,923 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-09-25 05:32:39,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:32:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-09-25 05:32:39,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 05:32:39,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:39,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:39,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:32:39,927 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:39,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:39,928 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-09-25 05:32:39,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:39,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483787924] [2020-09-25 05:32:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:40,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:40,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 05:32:40,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-09-25 05:32:40,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:40,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:32:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:32:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:32:40,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:32:40,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:40,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:40,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:40,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:40,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:40,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:40,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:40,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483787924] [2020-09-25 05:32:40,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:40,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:32:40,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412412308] [2020-09-25 05:32:40,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:32:40,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:40,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:32:40,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:32:40,577 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 5 states. [2020-09-25 05:32:40,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:40,922 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2020-09-25 05:32:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:32:40,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-25 05:32:40,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:40,927 INFO L225 Difference]: With dead ends: 251 [2020-09-25 05:32:40,927 INFO L226 Difference]: Without dead ends: 201 [2020-09-25 05:32:40,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:32:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-25 05:32:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-09-25 05:32:40,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 05:32:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-09-25 05:32:40,946 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 41 [2020-09-25 05:32:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:40,947 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-09-25 05:32:40,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:32:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-09-25 05:32:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:32:40,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:40,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:40,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:32:40,950 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-09-25 05:32:40,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:40,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882616726] [2020-09-25 05:32:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:40,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 05:32:41,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:32:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-09-25 05:32:41,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:41,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:32:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 05:32:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:32:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:41,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:41,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:41,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:41,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:41,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:41,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:41,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:41,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:41,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882616726] [2020-09-25 05:32:41,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:41,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:32:41,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115022366] [2020-09-25 05:32:41,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:32:41,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:41,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:32:41,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:32:41,936 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 4 states. [2020-09-25 05:32:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:42,189 INFO L93 Difference]: Finished difference Result 321 states and 359 transitions. [2020-09-25 05:32:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:32:42,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 05:32:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:42,191 INFO L225 Difference]: With dead ends: 321 [2020-09-25 05:32:42,192 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 05:32:42,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:32:42,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 05:32:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-25 05:32:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 05:32:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 224 transitions. [2020-09-25 05:32:42,206 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 224 transitions. Word has length 54 [2020-09-25 05:32:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:42,207 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 224 transitions. [2020-09-25 05:32:42,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:32:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 224 transitions. [2020-09-25 05:32:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 05:32:42,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:42,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:42,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:32:42,210 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:42,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:42,210 INFO L82 PathProgramCache]: Analyzing trace with hash 129316031, now seen corresponding path program 1 times [2020-09-25 05:32:42,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:42,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537442978] [2020-09-25 05:32:42,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:42,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:42,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:42,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 05:32:42,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 05:32:42,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:42,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:32:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:32:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:32:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:42,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:42,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:42,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:42,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:42,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:32:42,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:42,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:42,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:42,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:32:42,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537442978] [2020-09-25 05:32:42,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:42,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:32:42,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925943456] [2020-09-25 05:32:42,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:32:42,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:42,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:32:42,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:32:42,535 INFO L87 Difference]: Start difference. First operand 202 states and 224 transitions. Second operand 7 states. [2020-09-25 05:32:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:43,118 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2020-09-25 05:32:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:32:43,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 05:32:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:43,122 INFO L225 Difference]: With dead ends: 279 [2020-09-25 05:32:43,122 INFO L226 Difference]: Without dead ends: 273 [2020-09-25 05:32:43,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:32:43,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-25 05:32:43,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2020-09-25 05:32:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-25 05:32:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 240 transitions. [2020-09-25 05:32:43,163 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 240 transitions. Word has length 56 [2020-09-25 05:32:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:43,164 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 240 transitions. [2020-09-25 05:32:43,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:32:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 240 transitions. [2020-09-25 05:32:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 05:32:43,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:43,172 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:43,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:32:43,172 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:43,173 INFO L82 PathProgramCache]: Analyzing trace with hash 593034583, now seen corresponding path program 1 times [2020-09-25 05:32:43,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:43,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551302730] [2020-09-25 05:32:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:43,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:43,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 05:32:43,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-25 05:32:43,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:43,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:32:43,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:32:43,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:32:43,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:43,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:43,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:43,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:43,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:43,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:43,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:43,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:43,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:43,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:32:43,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551302730] [2020-09-25 05:32:43,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:43,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:32:43,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045607715] [2020-09-25 05:32:43,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:32:43,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:43,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:32:43,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:32:43,564 INFO L87 Difference]: Start difference. First operand 215 states and 240 transitions. Second operand 7 states. [2020-09-25 05:32:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:43,997 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2020-09-25 05:32:43,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:32:43,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 05:32:43,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:44,000 INFO L225 Difference]: With dead ends: 282 [2020-09-25 05:32:44,000 INFO L226 Difference]: Without dead ends: 267 [2020-09-25 05:32:44,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:32:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-25 05:32:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 212. [2020-09-25 05:32:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-25 05:32:44,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2020-09-25 05:32:44,016 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 62 [2020-09-25 05:32:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:44,019 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2020-09-25 05:32:44,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:32:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2020-09-25 05:32:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 05:32:44,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:44,024 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:44,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:32:44,024 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:44,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1629716359, now seen corresponding path program 1 times [2020-09-25 05:32:44,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:44,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280406741] [2020-09-25 05:32:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:44,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:44,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 05:32:44,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:44,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 05:32:44,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:44,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:32:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:32:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:32:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:44,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:44,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:44,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:44,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:44,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:32:44,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:44,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:32:44,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280406741] [2020-09-25 05:32:44,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:44,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:32:44,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021884545] [2020-09-25 05:32:44,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:32:44,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:44,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:32:44,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:32:44,383 INFO L87 Difference]: Start difference. First operand 212 states and 236 transitions. Second operand 7 states. [2020-09-25 05:32:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:44,765 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2020-09-25 05:32:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:32:44,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 05:32:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:44,767 INFO L225 Difference]: With dead ends: 264 [2020-09-25 05:32:44,768 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 05:32:44,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:32:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 05:32:44,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 207. [2020-09-25 05:32:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-25 05:32:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 230 transitions. [2020-09-25 05:32:44,776 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 230 transitions. Word has length 62 [2020-09-25 05:32:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:44,776 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 230 transitions. [2020-09-25 05:32:44,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:32:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 230 transitions. [2020-09-25 05:32:44,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 05:32:44,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:44,778 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:44,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:32:44,779 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:44,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:44,779 INFO L82 PathProgramCache]: Analyzing trace with hash 852438762, now seen corresponding path program 1 times [2020-09-25 05:32:44,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:44,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740078738] [2020-09-25 05:32:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:45,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:46,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:46,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 05:32:46,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1457 [2020-09-25 05:32:46,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:46,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:32:46,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:32:46,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:32:46,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:46,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:46,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:46,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:46,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:46,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:32:46,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:46,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:32:46,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740078738] [2020-09-25 05:32:46,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:46,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:32:46,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462275504] [2020-09-25 05:32:46,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:32:46,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:46,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:32:46,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:32:46,537 INFO L87 Difference]: Start difference. First operand 207 states and 230 transitions. Second operand 11 states. [2020-09-25 05:32:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:47,355 INFO L93 Difference]: Finished difference Result 288 states and 315 transitions. [2020-09-25 05:32:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 05:32:47,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 05:32:47,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:47,357 INFO L225 Difference]: With dead ends: 288 [2020-09-25 05:32:47,358 INFO L226 Difference]: Without dead ends: 282 [2020-09-25 05:32:47,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:32:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-25 05:32:47,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 226. [2020-09-25 05:32:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 05:32:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 251 transitions. [2020-09-25 05:32:47,372 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 251 transitions. Word has length 67 [2020-09-25 05:32:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:47,372 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 251 transitions. [2020-09-25 05:32:47,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:32:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 251 transitions. [2020-09-25 05:32:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 05:32:47,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:47,374 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:47,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:32:47,375 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:47,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1742912072, now seen corresponding path program 1 times [2020-09-25 05:32:47,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:47,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632511789] [2020-09-25 05:32:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:47,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:48,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:48,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 05:32:48,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:48,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-09-25 05:32:48,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:48,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:32:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:32:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:32:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:48,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:48,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:48,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:48,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:48,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:48,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:48,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:48,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:32:48,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632511789] [2020-09-25 05:32:48,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:48,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:32:48,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589641276] [2020-09-25 05:32:48,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:32:48,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:48,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:32:48,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:32:48,679 INFO L87 Difference]: Start difference. First operand 226 states and 251 transitions. Second operand 11 states. [2020-09-25 05:32:49,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:49,532 INFO L93 Difference]: Finished difference Result 304 states and 334 transitions. [2020-09-25 05:32:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 05:32:49,532 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 05:32:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:49,534 INFO L225 Difference]: With dead ends: 304 [2020-09-25 05:32:49,535 INFO L226 Difference]: Without dead ends: 298 [2020-09-25 05:32:49,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:32:49,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-25 05:32:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 238. [2020-09-25 05:32:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-25 05:32:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 264 transitions. [2020-09-25 05:32:49,550 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 264 transitions. Word has length 67 [2020-09-25 05:32:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:49,552 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 264 transitions. [2020-09-25 05:32:49,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:32:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 264 transitions. [2020-09-25 05:32:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 05:32:49,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:49,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:32:49,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:32:49,555 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1875154110, now seen corresponding path program 1 times [2020-09-25 05:32:49,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:49,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720519567] [2020-09-25 05:32:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:49,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:53,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:32:53,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:32:53,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4105 [2020-09-25 05:32:53,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:53,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:32:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:32:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:32:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:53,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:53,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:53,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:53,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:32:53,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:53,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:32:53,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720519567] [2020-09-25 05:32:53,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:53,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:32:53,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759302514] [2020-09-25 05:32:53,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:32:53,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:53,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:32:53,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:32:53,844 INFO L87 Difference]: Start difference. First operand 238 states and 264 transitions. Second operand 9 states. [2020-09-25 05:32:54,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:54,330 INFO L93 Difference]: Finished difference Result 305 states and 335 transitions. [2020-09-25 05:32:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:32:54,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 05:32:54,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:54,332 INFO L225 Difference]: With dead ends: 305 [2020-09-25 05:32:54,332 INFO L226 Difference]: Without dead ends: 290 [2020-09-25 05:32:54,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:32:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-25 05:32:54,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 245. [2020-09-25 05:32:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-25 05:32:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 272 transitions. [2020-09-25 05:32:54,343 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 272 transitions. Word has length 73 [2020-09-25 05:32:54,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:54,344 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 272 transitions. [2020-09-25 05:32:54,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:32:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 272 transitions. [2020-09-25 05:32:54,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 05:32:54,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:54,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:32:54,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:32:54,350 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:54,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:54,350 INFO L82 PathProgramCache]: Analyzing trace with hash -838472334, now seen corresponding path program 1 times [2020-09-25 05:32:54,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:54,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854307215] [2020-09-25 05:32:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:55,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:32:55,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:55,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-09-25 05:32:55,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:55,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:32:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:32:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:32:55,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:55,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:55,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:55,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:55,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:55,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:55,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:55,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:55,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:32:55,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854307215] [2020-09-25 05:32:55,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:55,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:32:55,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857898572] [2020-09-25 05:32:55,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:32:55,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:55,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:32:55,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:32:55,338 INFO L87 Difference]: Start difference. First operand 245 states and 272 transitions. Second operand 16 states. [2020-09-25 05:32:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:56,676 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2020-09-25 05:32:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 05:32:56,677 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 05:32:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:56,680 INFO L225 Difference]: With dead ends: 310 [2020-09-25 05:32:56,680 INFO L226 Difference]: Without dead ends: 304 [2020-09-25 05:32:56,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 05:32:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-25 05:32:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 249. [2020-09-25 05:32:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 05:32:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 276 transitions. [2020-09-25 05:32:56,689 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 276 transitions. Word has length 73 [2020-09-25 05:32:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:56,689 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 276 transitions. [2020-09-25 05:32:56,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:32:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 276 transitions. [2020-09-25 05:32:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 05:32:56,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:56,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:32:56,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:32:56,691 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:56,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1654345840, now seen corresponding path program 1 times [2020-09-25 05:32:56,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:56,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890810388] [2020-09-25 05:32:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:56,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:32:57,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-09-25 05:32:57,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:57,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:32:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:32:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:32:57,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:57,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:57,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:32:57,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:57,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:57,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:32:57,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890810388] [2020-09-25 05:32:57,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:57,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:32:57,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505203590] [2020-09-25 05:32:57,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:32:57,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:57,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:32:57,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:32:57,834 INFO L87 Difference]: Start difference. First operand 249 states and 276 transitions. Second operand 16 states. [2020-09-25 05:32:59,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:59,343 INFO L93 Difference]: Finished difference Result 324 states and 354 transitions. [2020-09-25 05:32:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 05:32:59,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 05:32:59,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:59,346 INFO L225 Difference]: With dead ends: 324 [2020-09-25 05:32:59,346 INFO L226 Difference]: Without dead ends: 318 [2020-09-25 05:32:59,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 05:32:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-09-25 05:32:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-09-25 05:32:59,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 05:32:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 286 transitions. [2020-09-25 05:32:59,373 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 286 transitions. Word has length 73 [2020-09-25 05:32:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:59,374 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 286 transitions. [2020-09-25 05:32:59,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:32:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 286 transitions. [2020-09-25 05:32:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 05:32:59,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:59,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:32:59,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:32:59,376 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:59,376 INFO L82 PathProgramCache]: Analyzing trace with hash -617664064, now seen corresponding path program 1 times [2020-09-25 05:32:59,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:59,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668189128] [2020-09-25 05:32:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:59,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:00,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:00,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:33:00,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:00,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-09-25 05:33:00,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:00,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:33:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:33:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:33:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:00,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:00,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:00,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:00,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:00,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:00,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:00,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668189128] [2020-09-25 05:33:00,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:00,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:33:00,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159204269] [2020-09-25 05:33:00,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:33:00,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:00,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:33:00,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:33:00,719 INFO L87 Difference]: Start difference. First operand 258 states and 286 transitions. Second operand 9 states. [2020-09-25 05:33:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:01,242 INFO L93 Difference]: Finished difference Result 316 states and 346 transitions. [2020-09-25 05:33:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:33:01,242 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 05:33:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:01,244 INFO L225 Difference]: With dead ends: 316 [2020-09-25 05:33:01,244 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 05:33:01,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:33:01,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 05:33:01,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 258. [2020-09-25 05:33:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 05:33:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 285 transitions. [2020-09-25 05:33:01,254 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 285 transitions. Word has length 73 [2020-09-25 05:33:01,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:01,254 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 285 transitions. [2020-09-25 05:33:01,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:33:01,255 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 285 transitions. [2020-09-25 05:33:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 05:33:01,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:01,256 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:01,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 05:33:01,256 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:01,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:01,257 INFO L82 PathProgramCache]: Analyzing trace with hash 342604767, now seen corresponding path program 2 times [2020-09-25 05:33:01,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:01,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810019010] [2020-09-25 05:33:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:01,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:03,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:03,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:33:03,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2577 [2020-09-25 05:33:03,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:03,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:33:03,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:33:03,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:33:03,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:04,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:04,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:04,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:04,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:33:04,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:04,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:04,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:04,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:04,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:04,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:04,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810019010] [2020-09-25 05:33:04,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:04,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 05:33:04,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550618645] [2020-09-25 05:33:04,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 05:33:04,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:04,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 05:33:04,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:33:04,193 INFO L87 Difference]: Start difference. First operand 258 states and 285 transitions. Second operand 18 states. [2020-09-25 05:33:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:05,801 INFO L93 Difference]: Finished difference Result 352 states and 384 transitions. [2020-09-25 05:33:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 05:33:05,802 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 05:33:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:05,805 INFO L225 Difference]: With dead ends: 352 [2020-09-25 05:33:05,805 INFO L226 Difference]: Without dead ends: 346 [2020-09-25 05:33:05,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 05:33:05,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-09-25 05:33:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 272. [2020-09-25 05:33:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-25 05:33:05,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 300 transitions. [2020-09-25 05:33:05,816 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 300 transitions. Word has length 78 [2020-09-25 05:33:05,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:05,817 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 300 transitions. [2020-09-25 05:33:05,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 05:33:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 300 transitions. [2020-09-25 05:33:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 05:33:05,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:05,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:05,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 05:33:05,819 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:05,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1736898641, now seen corresponding path program 1 times [2020-09-25 05:33:05,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:05,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582277464] [2020-09-25 05:33:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:08,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:33:08,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3101 [2020-09-25 05:33:08,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:08,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:08,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:33:08,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:33:08,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:33:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:33:09,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:09,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:09,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:09,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:09,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:09,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:09,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582277464] [2020-09-25 05:33:09,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:09,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 05:33:09,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106249438] [2020-09-25 05:33:09,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 05:33:09,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:09,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 05:33:09,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:33:09,264 INFO L87 Difference]: Start difference. First operand 272 states and 300 transitions. Second operand 18 states. [2020-09-25 05:33:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:10,761 INFO L93 Difference]: Finished difference Result 378 states and 412 transitions. [2020-09-25 05:33:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 05:33:10,762 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 05:33:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:10,764 INFO L225 Difference]: With dead ends: 378 [2020-09-25 05:33:10,764 INFO L226 Difference]: Without dead ends: 372 [2020-09-25 05:33:10,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 05:33:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-09-25 05:33:10,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 284. [2020-09-25 05:33:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-25 05:33:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 313 transitions. [2020-09-25 05:33:10,777 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 313 transitions. Word has length 78 [2020-09-25 05:33:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:10,777 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 313 transitions. [2020-09-25 05:33:10,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 05:33:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 313 transitions. [2020-09-25 05:33:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 05:33:10,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:10,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:10,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 05:33:10,779 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:10,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:10,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1698374602, now seen corresponding path program 1 times [2020-09-25 05:33:10,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:10,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523889086] [2020-09-25 05:33:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:10,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:11,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:33:11,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:11,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-09-25 05:33:11,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:11,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:33:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:33:11,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:33:11,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:11,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:11,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:11,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:11,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:11,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:11,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:11,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:11,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:11,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:11,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:11,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523889086] [2020-09-25 05:33:11,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:11,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:33:11,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606535133] [2020-09-25 05:33:11,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:33:11,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:11,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:33:11,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:11,749 INFO L87 Difference]: Start difference. First operand 284 states and 313 transitions. Second operand 16 states. [2020-09-25 05:33:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:13,224 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2020-09-25 05:33:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 05:33:13,225 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 05:33:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:13,227 INFO L225 Difference]: With dead ends: 350 [2020-09-25 05:33:13,227 INFO L226 Difference]: Without dead ends: 335 [2020-09-25 05:33:13,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 05:33:13,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-25 05:33:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 286. [2020-09-25 05:33:13,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-25 05:33:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 315 transitions. [2020-09-25 05:33:13,238 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 315 transitions. Word has length 79 [2020-09-25 05:33:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:13,238 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 315 transitions. [2020-09-25 05:33:13,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:33:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 315 transitions. [2020-09-25 05:33:13,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 05:33:13,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:13,240 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:13,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 05:33:13,241 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:13,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:13,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1559910918, now seen corresponding path program 2 times [2020-09-25 05:33:13,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:13,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929753169] [2020-09-25 05:33:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:13,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:33:13,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:13,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-09-25 05:33:13,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:13,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:33:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:33:13,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:33:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:33:14,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:14,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:14,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:14,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:14,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:14,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929753169] [2020-09-25 05:33:14,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:14,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:33:14,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71191588] [2020-09-25 05:33:14,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:33:14,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:14,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:33:14,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:14,286 INFO L87 Difference]: Start difference. First operand 286 states and 315 transitions. Second operand 16 states. [2020-09-25 05:33:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:15,545 INFO L93 Difference]: Finished difference Result 330 states and 361 transitions. [2020-09-25 05:33:15,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 05:33:15,549 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 05:33:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:15,550 INFO L225 Difference]: With dead ends: 330 [2020-09-25 05:33:15,550 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 05:33:15,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 05:33:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 05:33:15,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 275. [2020-09-25 05:33:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-25 05:33:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 303 transitions. [2020-09-25 05:33:15,560 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 303 transitions. Word has length 79 [2020-09-25 05:33:15,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:15,561 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 303 transitions. [2020-09-25 05:33:15,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:33:15,561 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 303 transitions. [2020-09-25 05:33:15,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 05:33:15,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:15,562 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:15,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 05:33:15,563 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:15,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:15,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1643861864, now seen corresponding path program 2 times [2020-09-25 05:33:15,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:15,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905285709] [2020-09-25 05:33:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:16,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:33:16,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:16,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-09-25 05:33:16,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:16,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:33:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:33:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:33:16,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:16,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:16,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:16,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:16,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:16,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:33:16,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:16,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:16,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905285709] [2020-09-25 05:33:16,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:16,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:33:16,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136718778] [2020-09-25 05:33:16,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:33:16,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:16,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:33:16,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:16,426 INFO L87 Difference]: Start difference. First operand 275 states and 303 transitions. Second operand 16 states. [2020-09-25 05:33:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:17,818 INFO L93 Difference]: Finished difference Result 314 states and 343 transitions. [2020-09-25 05:33:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 05:33:17,819 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 05:33:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:17,821 INFO L225 Difference]: With dead ends: 314 [2020-09-25 05:33:17,821 INFO L226 Difference]: Without dead ends: 288 [2020-09-25 05:33:17,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 05:33:17,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-25 05:33:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 261. [2020-09-25 05:33:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-25 05:33:17,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 288 transitions. [2020-09-25 05:33:17,832 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 288 transitions. Word has length 79 [2020-09-25 05:33:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:17,832 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 288 transitions. [2020-09-25 05:33:17,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:33:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 288 transitions. [2020-09-25 05:33:17,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 05:33:17,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:17,834 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:17,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 05:33:17,834 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:17,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1435872375, now seen corresponding path program 2 times [2020-09-25 05:33:17,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:17,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399932829] [2020-09-25 05:33:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:19,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:19,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 05:33:19,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:33:19,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2069 [2020-09-25 05:33:19,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:19,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:33:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:33:19,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:33:19,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:20,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:20,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:20,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:20,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:20,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:20,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:33:20,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:20,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:20,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:20,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399932829] [2020-09-25 05:33:20,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:20,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:33:20,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266672143] [2020-09-25 05:33:20,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:33:20,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:20,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:33:20,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:20,198 INFO L87 Difference]: Start difference. First operand 261 states and 288 transitions. Second operand 16 states. [2020-09-25 05:33:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:21,478 INFO L93 Difference]: Finished difference Result 339 states and 370 transitions. [2020-09-25 05:33:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 05:33:21,478 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-09-25 05:33:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:21,481 INFO L225 Difference]: With dead ends: 339 [2020-09-25 05:33:21,481 INFO L226 Difference]: Without dead ends: 324 [2020-09-25 05:33:21,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 05:33:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-09-25 05:33:21,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 279. [2020-09-25 05:33:21,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-09-25 05:33:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2020-09-25 05:33:21,493 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 84 [2020-09-25 05:33:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:21,493 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2020-09-25 05:33:21,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:33:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2020-09-25 05:33:21,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 05:33:21,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:21,495 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:21,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 05:33:21,496 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:21,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:21,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1822413145, now seen corresponding path program 3 times [2020-09-25 05:33:21,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:21,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693622988] [2020-09-25 05:33:21,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:21,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:22,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 05:33:22,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-09-25 05:33:22,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:22,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 05:33:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:33:22,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:33:22,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1