/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=0.2 --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-ext3-properties/sll_length_check-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:14,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:14,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:14,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:14,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:14,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:14,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:14,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:14,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:14,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:14,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:14,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:14,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:15,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:15,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:15,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:15,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:15,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:15,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:15,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:15,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:15,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:15,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:15,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:15,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:15,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:15,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:15,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:15,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:15,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:15,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:15,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:15,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:15,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:15,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:15,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:15,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:15,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:15,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:15,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:15,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:15,047 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 04:24:15,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:15,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:15,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:15,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:15,101 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:15,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:15,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:15,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:15,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:15,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:15,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:15,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:15,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:15,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:15,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:15,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:15,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:15,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:15,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:15,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:15,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:15,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:15,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:15,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:15,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:15,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:15,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:15,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:15,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:15,107 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:24:15,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:15,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:15,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:15,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:15,600 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:15,602 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-25 04:24:15,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/266283714/27e2f0356bab4e48b9fd3da0707c7bae/FLAG183fcc39b [2020-09-25 04:24:16,319 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:16,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-25 04:24:16,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/266283714/27e2f0356bab4e48b9fd3da0707c7bae/FLAG183fcc39b [2020-09-25 04:24:16,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/266283714/27e2f0356bab4e48b9fd3da0707c7bae [2020-09-25 04:24:16,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:16,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:16,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:16,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:16,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:16,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:16" (1/1) ... [2020-09-25 04:24:16,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb53380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:16, skipping insertion in model container [2020-09-25 04:24:16,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:16" (1/1) ... [2020-09-25 04:24:16,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:16,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:17,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:17,177 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:17,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:17,288 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:17,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:17 WrapperNode [2020-09-25 04:24:17,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:17,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:17,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:17,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:17,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:17" (1/1) ... [2020-09-25 04:24:17,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:17" (1/1) ... [2020-09-25 04:24:17,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:17" (1/1) ... [2020-09-25 04:24:17,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:17" (1/1) ... [2020-09-25 04:24:17,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:17" (1/1) ... [2020-09-25 04:24:17,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:17" (1/1) ... [2020-09-25 04:24:17,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:17" (1/1) ... [2020-09-25 04:24:17,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:17,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:17,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:17,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:17,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:17" (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 04:24:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 04:24:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 04:24:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 04:24:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 04:24:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 04:24:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 04:24:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:24:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 04:24:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 04:24:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 04:24:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 04:24:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 04:24:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 04:24:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 04:24:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 04:24:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 04:24:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 04:24:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 04:24:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 04:24:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 04:24:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 04:24:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 04:24:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 04:24:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 04:24:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 04:24:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 04:24:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 04:24:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 04:24:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 04:24:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 04:24:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 04:24:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 04:24:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 04:24:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 04:24:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 04:24:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 04:24:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 04:24:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 04:24:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 04:24:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 04:24:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 04:24:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 04:24:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 04:24:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 04:24:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 04:24:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 04:24:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 04:24:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 04:24:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 04:24:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 04:24:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 04:24:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 04:24:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 04:24:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 04:24:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 04:24:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 04:24:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 04:24:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 04:24:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 04:24:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:24:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 04:24:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 04:24:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:24:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 04:24:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 04:24:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 04:24:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 04:24:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 04:24:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:24:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 04:24:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 04:24:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 04:24:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 04:24:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 04:24:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 04:24:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 04:24:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 04:24:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 04:24:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 04:24:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 04:24:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 04:24:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 04:24:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 04:24:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 04:24:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 04:24:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 04:24:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 04:24:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 04:24:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 04:24:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 04:24:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 04:24:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 04:24:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 04:24:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 04:24:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 04:24:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 04:24:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 04:24:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 04:24:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 04:24:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 04:24:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 04:24:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 04:24:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 04:24:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 04:24:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 04:24:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 04:24:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 04:24:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 04:24:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 04:24:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 04:24:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 04:24:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 04:24:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 04:24:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:24:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:24:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 04:24:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:24:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 04:24:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:24:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:17,830 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 04:24:18,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:18,054 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 04:24:18,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:18 BoogieIcfgContainer [2020-09-25 04:24:18,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:18,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:18,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:18,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:18,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:16" (1/3) ... [2020-09-25 04:24:18,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51231f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:18, skipping insertion in model container [2020-09-25 04:24:18,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:17" (2/3) ... [2020-09-25 04:24:18,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51231f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:18, skipping insertion in model container [2020-09-25 04:24:18,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:18" (3/3) ... [2020-09-25 04:24:18,071 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-09-25 04:24:18,079 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:18,090 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:18,114 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:24:18,146 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:24:18,147 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:24:18,147 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:24:18,147 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:24:18,147 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:24:18,147 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:24:18,148 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:24:18,148 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:24:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-25 04:24:18,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 04:24:18,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:18,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:18,185 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:18,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1731717969, now seen corresponding path program 1 times [2020-09-25 04:24:18,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:18,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16125457] [2020-09-25 04:24:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:18,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:18,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:18,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:24:18,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-25 04:24:18,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:18,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:24:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:18,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 04:24:18,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:18,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:18,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:18,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:18,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:24:18,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:18,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:18,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:18,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:18,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:18,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 04:24:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:18,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:18,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:18,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:18,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:24:18,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:18,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:18,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 04:24:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:18,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:18,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:18,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:18,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:24:18,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:18,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:18,945 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 04:24:18,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16125457] [2020-09-25 04:24:18,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:18,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:18,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321595528] [2020-09-25 04:24:18,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:18,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:18,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:18,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:18,985 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 4 states. [2020-09-25 04:24:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:19,248 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2020-09-25 04:24:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:24:19,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 04:24:19,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:19,264 INFO L225 Difference]: With dead ends: 154 [2020-09-25 04:24:19,264 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 04:24:19,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:24:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 04:24:19,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2020-09-25 04:24:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 04:24:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-25 04:24:19,330 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 29 [2020-09-25 04:24:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:19,331 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-25 04:24:19,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-25 04:24:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:24:19,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:19,333 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] [2020-09-25 04:24:19,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:19,334 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:19,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:19,335 INFO L82 PathProgramCache]: Analyzing trace with hash 632987872, now seen corresponding path program 1 times [2020-09-25 04:24:19,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:19,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590511538] [2020-09-25 04:24:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:19,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 04:24:19,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:24:19,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-25 04:24:19,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:19,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:24:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:24:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:19,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:19,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:19,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:24:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:19,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:19,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 04:24:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:19,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:19,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:19,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:19,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:24:19,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:19,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:19,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:19,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:19,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:19,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:19,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:24:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:19,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:19,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:19,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:19,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:24:19,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:19,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:19,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:19,982 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 04:24:19,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590511538] [2020-09-25 04:24:19,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:19,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:24:19,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89030921] [2020-09-25 04:24:19,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:24:19,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:19,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:24:19,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:24:19,987 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 6 states. [2020-09-25 04:24:20,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:20,359 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2020-09-25 04:24:20,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:24:20,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 04:24:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:20,362 INFO L225 Difference]: With dead ends: 143 [2020-09-25 04:24:20,362 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 04:24:20,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:24:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 04:24:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 57. [2020-09-25 04:24:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 04:24:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-25 04:24:20,377 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 33 [2020-09-25 04:24:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:20,377 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-25 04:24:20,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:24:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-25 04:24:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:24:20,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:20,379 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] [2020-09-25 04:24:20,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:24:20,379 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:20,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1134974621, now seen corresponding path program 1 times [2020-09-25 04:24:20,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:20,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214006087] [2020-09-25 04:24:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:20,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:20,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:24:20,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:20,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 04:24:20,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:20,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:20,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:24:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:20,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:20,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:20,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:20,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:20,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:20,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:24:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:20,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:20,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:20,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:24:20,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:20,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:24:20,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:20,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 04:24:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:20,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:20,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:20,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:20,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:24:20,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:20,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:20,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:20,645 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 04:24:20,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214006087] [2020-09-25 04:24:20,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:20,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:24:20,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100028651] [2020-09-25 04:24:20,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:20,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:20,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:20,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:20,648 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-09-25 04:24:20,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:20,968 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2020-09-25 04:24:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:24:20,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 04:24:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:20,971 INFO L225 Difference]: With dead ends: 114 [2020-09-25 04:24:20,971 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 04:24:20,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:24:20,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 04:24:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 67. [2020-09-25 04:24:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 04:24:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-09-25 04:24:20,993 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 35 [2020-09-25 04:24:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:20,994 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-09-25 04:24:20,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-09-25 04:24:20,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 04:24:20,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:20,997 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] [2020-09-25 04:24:20,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:24:20,997 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:20,998 INFO L82 PathProgramCache]: Analyzing trace with hash 226602169, now seen corresponding path program 1 times [2020-09-25 04:24:20,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:20,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477825082] [2020-09-25 04:24:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:21,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:22,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:22,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:24:22,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:24:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-09-25 04:24:22,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:22,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:24:22,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:22,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:22,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:24:22,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:22,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:22,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:24:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:24:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:22,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:24:22,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:22,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 04:24:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:22,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:22,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:22,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:22,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:22,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:22,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:22,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:22,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:22,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:22,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477825082] [2020-09-25 04:24:22,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:22,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:24:22,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020547635] [2020-09-25 04:24:22,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:24:22,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:22,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:24:22,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:22,310 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 9 states. [2020-09-25 04:24:22,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:22,793 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-09-25 04:24:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 04:24:22,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-09-25 04:24:22,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:22,796 INFO L225 Difference]: With dead ends: 135 [2020-09-25 04:24:22,798 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 04:24:22,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 04:24:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 77. [2020-09-25 04:24:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 04:24:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-09-25 04:24:22,828 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 43 [2020-09-25 04:24:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:22,828 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-09-25 04:24:22,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:24:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-09-25 04:24:22,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 04:24:22,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:22,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:22,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:24:22,830 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:22,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:22,834 INFO L82 PathProgramCache]: Analyzing trace with hash 360366586, now seen corresponding path program 1 times [2020-09-25 04:24:22,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:22,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238880689] [2020-09-25 04:24:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:22,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:25,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:24:25,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:24:25,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2642 [2020-09-25 04:24:25,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:25,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:24:25,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:25,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:25,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:25,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:25,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:25,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:25,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:25,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:24:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:25,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:24:25,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:25,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 04:24:25,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:25,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:25,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:24:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:24:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:25,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:25,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:25,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:24:25,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:25,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:25,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:25,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238880689] [2020-09-25 04:24:25,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:25,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:24:25,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514177981] [2020-09-25 04:24:25,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:24:25,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:25,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:24:25,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:25,735 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 9 states. [2020-09-25 04:24:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:26,206 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-09-25 04:24:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 04:24:26,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-09-25 04:24:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:26,211 INFO L225 Difference]: With dead ends: 135 [2020-09-25 04:24:26,211 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 04:24:26,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 04:24:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 92. [2020-09-25 04:24:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 04:24:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-09-25 04:24:26,224 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 44 [2020-09-25 04:24:26,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:26,224 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-09-25 04:24:26,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:24:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-09-25 04:24:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:24:26,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:26,226 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 04:24:26,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:24:26,226 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:26,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:26,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1391720975, now seen corresponding path program 2 times [2020-09-25 04:24:26,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:26,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690654751] [2020-09-25 04:24:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:26,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:29,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 04:24:29,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:24:29,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3162 [2020-09-25 04:24:29,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:29,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:29,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:29,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 04:24:29,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:24:29,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:29,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:29,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:29,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:29,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:29,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 04:24:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:29,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:29,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:29,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:29,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 04:24:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:29,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:29,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:29,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:29,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:29,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:24:29,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690654751] [2020-09-25 04:24:29,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:29,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:24:29,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358180019] [2020-09-25 04:24:29,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:24:29,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:29,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:24:29,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:24:29,481 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 5 states. [2020-09-25 04:24:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:29,623 INFO L93 Difference]: Finished difference Result 165 states and 183 transitions. [2020-09-25 04:24:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:24:29,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-25 04:24:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:29,625 INFO L225 Difference]: With dead ends: 165 [2020-09-25 04:24:29,625 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 04:24:29,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:29,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 04:24:29,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2020-09-25 04:24:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 04:24:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2020-09-25 04:24:29,637 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 51 [2020-09-25 04:24:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:29,638 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2020-09-25 04:24:29,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:24:29,638 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2020-09-25 04:24:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 04:24:29,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:29,640 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] [2020-09-25 04:24:29,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:24:29,640 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:29,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:29,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2119311204, now seen corresponding path program 1 times [2020-09-25 04:24:29,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:29,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028971337] [2020-09-25 04:24:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:34,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 04:24:34,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:24:34,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:24:34,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:34,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:24:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:24:34,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:34,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:34,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:34,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:34,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:34,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:34,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:34,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:24:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:34,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:34,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:24:34,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:34,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:24:34,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:34,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:34,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:34,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:24:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:34,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 04:24:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:34,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:34,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:34,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:34,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:34,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:34,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:34,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028971337] [2020-09-25 04:24:34,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:34,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:24:34,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530527510] [2020-09-25 04:24:34,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:24:34,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:34,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:24:34,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:34,800 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 8 states. [2020-09-25 04:24:35,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:35,241 INFO L93 Difference]: Finished difference Result 175 states and 188 transitions. [2020-09-25 04:24:35,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 04:24:35,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-25 04:24:35,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:35,243 INFO L225 Difference]: With dead ends: 175 [2020-09-25 04:24:35,243 INFO L226 Difference]: Without dead ends: 121 [2020-09-25 04:24:35,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:35,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-25 04:24:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 93. [2020-09-25 04:24:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 04:24:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2020-09-25 04:24:35,253 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 52 [2020-09-25 04:24:35,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:35,253 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2020-09-25 04:24:35,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:24:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2020-09-25 04:24:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 04:24:35,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:35,255 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:35,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:24:35,255 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:35,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1801872195, now seen corresponding path program 2 times [2020-09-25 04:24:35,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:35,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910477499] [2020-09-25 04:24:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:37,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 04:24:37,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:24:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2198 [2020-09-25 04:24:37,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:37,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:24:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:37,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:37,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:37,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:37,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:37,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:37,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:37,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:37,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:37,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:37,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:37,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:37,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:24:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:37,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:37,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:24:37,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 04:24:37,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:37,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:24:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:37,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 04:24:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:37,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:37,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:37,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:37,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:37,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:37,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910477499] [2020-09-25 04:24:37,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:37,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:24:37,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148854313] [2020-09-25 04:24:37,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:24:37,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:37,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:24:37,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:24:37,746 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand 11 states. [2020-09-25 04:24:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:38,375 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2020-09-25 04:24:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:24:38,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-25 04:24:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:38,378 INFO L225 Difference]: With dead ends: 148 [2020-09-25 04:24:38,378 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 04:24:38,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-09-25 04:24:38,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 04:24:38,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-09-25 04:24:38,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 04:24:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2020-09-25 04:24:38,397 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 53 [2020-09-25 04:24:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:38,399 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2020-09-25 04:24:38,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:24:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2020-09-25 04:24:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 04:24:38,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:38,402 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:38,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:24:38,403 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:38,403 INFO L82 PathProgramCache]: Analyzing trace with hash 840072530, now seen corresponding path program 3 times [2020-09-25 04:24:38,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:38,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871020330] [2020-09-25 04:24:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:38,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:39,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 04:24:39,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:24:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-09-25 04:24:39,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:39,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:24:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 04:24:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:24:39,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:39,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:39,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:39,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:39,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:39,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:39,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:39,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:39,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:24:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:39,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:39,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:39,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:39,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:24:39,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:39,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:39,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:39,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:39,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:24:39,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:39,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 04:24:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:39,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:39,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:39,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:39,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:39,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 04:24:39,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871020330] [2020-09-25 04:24:39,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:39,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:24:39,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580525797] [2020-09-25 04:24:39,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:24:39,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:39,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:24:39,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:39,441 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand 8 states. [2020-09-25 04:24:39,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:39,810 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2020-09-25 04:24:39,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:24:39,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-25 04:24:39,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:39,812 INFO L225 Difference]: With dead ends: 141 [2020-09-25 04:24:39,812 INFO L226 Difference]: Without dead ends: 121 [2020-09-25 04:24:39,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:24:39,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-25 04:24:39,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2020-09-25 04:24:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 04:24:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2020-09-25 04:24:39,829 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 53 [2020-09-25 04:24:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:39,829 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2020-09-25 04:24:39,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:24:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2020-09-25 04:24:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 04:24:39,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:39,832 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:24:39,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:24:39,833 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:39,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:39,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2096888703, now seen corresponding path program 1 times [2020-09-25 04:24:39,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:39,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948432575] [2020-09-25 04:24:39,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:44,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 04:24:44,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:24:44,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4894 [2020-09-25 04:24:44,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:44,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:44,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:24:44,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:44,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:44,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:24:44,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:44,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:44,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 04:24:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:44,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:24:44,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:44,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 04:24:44,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:44,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:44,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:24:44,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:44,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 04:24:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:44,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:44,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:44,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:44,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:44,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:44,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:44,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:44,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:44,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:44,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948432575] [2020-09-25 04:24:44,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:44,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:24:44,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016735873] [2020-09-25 04:24:44,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:24:44,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:44,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:24:44,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:24:44,959 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand 11 states. [2020-09-25 04:24:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:45,515 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2020-09-25 04:24:45,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:24:45,516 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-09-25 04:24:45,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:45,518 INFO L225 Difference]: With dead ends: 133 [2020-09-25 04:24:45,518 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 04:24:45,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-09-25 04:24:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 04:24:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2020-09-25 04:24:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 04:24:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2020-09-25 04:24:45,525 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 54 [2020-09-25 04:24:45,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:45,526 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2020-09-25 04:24:45,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:24:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2020-09-25 04:24:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 04:24:45,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:45,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:45,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:24:45,527 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:45,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1727079450, now seen corresponding path program 3 times [2020-09-25 04:24:45,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:45,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652556755] [2020-09-25 04:24:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:45,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 04:24:45,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:45,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-09-25 04:24:45,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:45,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:24:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:24:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:24:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:46,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:46,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:46,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:24:46,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:46,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:46,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:24:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:46,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:24:46,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 04:24:46,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:46,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:24:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:46,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:24:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:46,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:24:46,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:46,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:24:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 04:24:46,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652556755] [2020-09-25 04:24:46,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:46,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 04:24:46,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639953657] [2020-09-25 04:24:46,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:24:46,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:46,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:24:46,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:24:46,307 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand 12 states. [2020-09-25 04:24:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:46,785 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-09-25 04:24:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 04:24:46,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-09-25 04:24:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:46,787 INFO L225 Difference]: With dead ends: 107 [2020-09-25 04:24:46,787 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 04:24:46,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:24:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 04:24:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2020-09-25 04:24:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 04:24:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-09-25 04:24:46,799 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 62 [2020-09-25 04:24:46,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:46,801 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-09-25 04:24:46,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:24:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-09-25 04:24:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:24:46,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:46,803 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:46,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:24:46,803 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:46,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:46,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1187742581, now seen corresponding path program 1 times [2020-09-25 04:24:46,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:46,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343703891] [2020-09-25 04:24:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:24:47,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-09-25 04:24:47,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:24:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 04:24:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:24:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:47,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:47,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:47,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:47,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:24:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:48,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:48,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:24:48,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 04:24:48,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:48,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:24:48,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:24:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:48,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:48,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:48,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:48,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 04:24:48,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:48,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:48,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:24:48,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:24:48,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343703891] [2020-09-25 04:24:48,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:48,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:24:48,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890255919] [2020-09-25 04:24:48,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:24:48,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:48,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:24:48,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:24:48,375 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 16 states. [2020-09-25 04:24:49,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:49,171 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2020-09-25 04:24:49,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 04:24:49,172 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-09-25 04:24:49,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:49,173 INFO L225 Difference]: With dead ends: 114 [2020-09-25 04:24:49,173 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 04:24:49,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2020-09-25 04:24:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 04:24:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2020-09-25 04:24:49,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 04:24:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2020-09-25 04:24:49,180 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 69 [2020-09-25 04:24:49,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:49,181 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2020-09-25 04:24:49,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:24:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2020-09-25 04:24:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 04:24:49,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:49,182 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:24:49,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 04:24:49,182 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:49,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:49,183 INFO L82 PathProgramCache]: Analyzing trace with hash 979580858, now seen corresponding path program 2 times [2020-09-25 04:24:49,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:49,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696239284] [2020-09-25 04:24:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:51,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:24:54,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:24:54,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:24:54,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:24:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 04:24:54,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:54,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:54,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:54,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:54,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:54,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:24:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:24:54,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 04:24:54,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:24:54,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:24:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:24:54,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 04:24:54,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:24:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:24:54,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 04:24:54,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696239284] [2020-09-25 04:24:54,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:54,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 04:24:54,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778206996] [2020-09-25 04:24:54,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:24:54,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:54,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:24:54,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:24:54,702 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 12 states. [2020-09-25 04:24:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:55,366 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2020-09-25 04:24:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:24:55,366 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-09-25 04:24:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:55,368 INFO L225 Difference]: With dead ends: 126 [2020-09-25 04:24:55,368 INFO L226 Difference]: Without dead ends: 121 [2020-09-25 04:24:55,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-09-25 04:24:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-25 04:24:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2020-09-25 04:24:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 04:24:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2020-09-25 04:24:55,378 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 76 [2020-09-25 04:24:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:55,378 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2020-09-25 04:24:55,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:24:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2020-09-25 04:24:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 04:24:55,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:55,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:55,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 04:24:55,380 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:55,380 INFO L82 PathProgramCache]: Analyzing trace with hash -446623556, now seen corresponding path program 1 times [2020-09-25 04:24:55,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:55,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861897717] [2020-09-25 04:24:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:55,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:55,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:55,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:24:55,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-25 04:24:55,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:55,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:24:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:24:55,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:55,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:55,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:55,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:55,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:55,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:55,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:55,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 04:24:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:55,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:55,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:24:55,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:55,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 04:24:55,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:55,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:24:55,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 04:24:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:55,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:55,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:24:55,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:24:55,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:55,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:24:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:55,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 04:24:55,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861897717] [2020-09-25 04:24:55,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:55,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 04:24:55,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053294820] [2020-09-25 04:24:55,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 04:24:55,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:55,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 04:24:56,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:24:56,000 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 13 states. [2020-09-25 04:24:56,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:56,632 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2020-09-25 04:24:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 04:24:56,633 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-09-25 04:24:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:56,634 INFO L225 Difference]: With dead ends: 164 [2020-09-25 04:24:56,634 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 04:24:56,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2020-09-25 04:24:56,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 04:24:56,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2020-09-25 04:24:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 04:24:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2020-09-25 04:24:56,642 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 77 [2020-09-25 04:24:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:56,642 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 118 transitions. [2020-09-25 04:24:56,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 04:24:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 118 transitions. [2020-09-25 04:24:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 04:24:56,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:56,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:56,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 04:24:56,644 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:56,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:56,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1305863211, now seen corresponding path program 3 times [2020-09-25 04:24:56,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:56,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311227199] [2020-09-25 04:24:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 04:24:56,667 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 04:24:56,668 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:24:56,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 04:24:56,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:24:56 BoogieIcfgContainer [2020-09-25 04:24:56,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:24:56,695 INFO L168 Benchmark]: Toolchain (without parser) took 40077.59 ms. Allocated memory was 140.5 MB in the beginning and 451.4 MB in the end (delta: 310.9 MB). Free memory was 102.1 MB in the beginning and 188.6 MB in the end (delta: -86.5 MB). Peak memory consumption was 224.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:56,696 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:24:56,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.45 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 171.1 MB in the end (delta: -69.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:56,698 INFO L168 Benchmark]: Boogie Preprocessor took 71.34 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 168.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:56,699 INFO L168 Benchmark]: RCFGBuilder took 698.88 ms. Allocated memory is still 204.5 MB. Free memory was 168.5 MB in the beginning and 122.3 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:56,700 INFO L168 Benchmark]: TraceAbstraction took 38630.51 ms. Allocated memory was 204.5 MB in the beginning and 451.4 MB in the end (delta: 246.9 MB). Free memory was 122.3 MB in the beginning and 188.6 MB in the end (delta: -66.3 MB). Peak memory consumption was 180.7 MB. Max. memory is 7.1 GB. [2020-09-25 04:24:56,703 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 668.45 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 171.1 MB in the end (delta: -69.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.34 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 168.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 698.88 ms. Allocated memory is still 204.5 MB. Free memory was 168.5 MB in the beginning and 122.3 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38630.51 ms. Allocated memory was 204.5 MB in the beginning and 451.4 MB in the end (delta: 246.9 MB). Free memory was 122.3 MB in the beginning and 188.6 MB in the end (delta: -66.3 MB). Peak memory consumption was 180.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] RET, EXPR sll_create(len + 1) [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [L597] RET, EXPR sll_length(s) [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.5s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 850 SDtfs, 1771 SDslu, 1890 SDs, 0 SdLazy, 4103 SolverSat, 265 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 294 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 264 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 30.9s InterpolantComputationTime, 814 NumberOfCodeBlocks, 814 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 717 ConstructedInterpolants, 0 QuantifiedInterpolants, 101172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 132/180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...