/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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-simple/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:34,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:34,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:34,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:34,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:34,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:34,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:34,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:34,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:34,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:34,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:34,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:34,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:34,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:34,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:34,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:34,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:34,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:34,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:34,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:34,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:34,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:34,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:34,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:34,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:34,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:34,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:34,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:34,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:34,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:34,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:34,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:34,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:34,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:34,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:34,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:34,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:34,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:34,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:34,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:34,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:34,354 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 10:05:34,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:34,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:34,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:34,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:34,384 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:34,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:34,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:34,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:34,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:34,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:34,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:34,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:34,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:34,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:34,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:34,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:34,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:34,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:34,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:34,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:34,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:34,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:34,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:34,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:34,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:34,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:34,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:34,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:34,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:34,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:05:34,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:34,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:34,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:34,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:34,907 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:34,908 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 10:05:35,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01ce4f908/523484298b734850ab0997d2ad097668/FLAG2dee6670a [2020-09-25 10:05:35,682 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:35,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 10:05:35,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01ce4f908/523484298b734850ab0997d2ad097668/FLAG2dee6670a [2020-09-25 10:05:35,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01ce4f908/523484298b734850ab0997d2ad097668 [2020-09-25 10:05:35,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:35,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:35,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:35,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:35,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:35,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:35" (1/1) ... [2020-09-25 10:05:35,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ae2273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:35, skipping insertion in model container [2020-09-25 10:05:35,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:35" (1/1) ... [2020-09-25 10:05:35,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:36,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:36,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:36,597 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:36,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:36,717 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:36,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:36 WrapperNode [2020-09-25 10:05:36,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:36,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:36,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:36,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:36,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:36" (1/1) ... [2020-09-25 10:05:36,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:36" (1/1) ... [2020-09-25 10:05:36,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:36" (1/1) ... [2020-09-25 10:05:36,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:36" (1/1) ... [2020-09-25 10:05:36,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:36" (1/1) ... [2020-09-25 10:05:36,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:36" (1/1) ... [2020-09-25 10:05:36,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:36" (1/1) ... [2020-09-25 10:05:36,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:36,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:36,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:36,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:36,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:36,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:36,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:36,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 10:05:36,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 10:05:36,888 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 10:05:36,889 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 10:05:36,889 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 10:05:36,890 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-09-25 10:05:36,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:36,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:36,891 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 10:05:36,891 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 10:05:36,892 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:36,892 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:36,892 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:36,893 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:36,893 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:36,893 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:36,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:36,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 10:05:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 10:05:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 10:05:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-09-25 10:05:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 10:05:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 10:05:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:37,307 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 10:05:37,579 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:37,580 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 10:05:37,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:37 BoogieIcfgContainer [2020-09-25 10:05:37,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:37,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:37,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:37,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:37,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:35" (1/3) ... [2020-09-25 10:05:37,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58aff34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:37, skipping insertion in model container [2020-09-25 10:05:37,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:36" (2/3) ... [2020-09-25 10:05:37,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58aff34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:37, skipping insertion in model container [2020-09-25 10:05:37,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:37" (3/3) ... [2020-09-25 10:05:37,595 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-09-25 10:05:37,606 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:37,615 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:05:37,636 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:05:37,664 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:37,664 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:37,664 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:37,664 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:37,665 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:37,665 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:37,665 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:37,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-25 10:05:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 10:05:37,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:37,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:37,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:37,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-09-25 10:05:37,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:37,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782704534] [2020-09-25 10:05:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:38,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:05:38,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:05:38,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-09-25 10:05:38,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:38,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:38,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:05:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:05:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:05:38,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:05:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:38,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:38,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:38,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:05:38,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:38,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:38,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:38,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:05:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:38,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:38,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 10:05:38,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:38,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:05:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:39,083 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 10:05:39,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782704534] [2020-09-25 10:05:39,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:39,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 10:05:39,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148380434] [2020-09-25 10:05:39,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:05:39,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:39,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:05:39,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:05:39,120 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 9 states. [2020-09-25 10:05:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:39,717 INFO L93 Difference]: Finished difference Result 154 states and 176 transitions. [2020-09-25 10:05:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:05:39,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-25 10:05:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:39,736 INFO L225 Difference]: With dead ends: 154 [2020-09-25 10:05:39,736 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 10:05:39,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:05:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 10:05:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2020-09-25 10:05:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 10:05:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-25 10:05:39,809 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 27 [2020-09-25 10:05:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:39,810 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-25 10:05:39,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:05:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-25 10:05:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 10:05:39,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:39,812 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] [2020-09-25 10:05:39,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:39,813 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:39,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:39,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1632096868, now seen corresponding path program 1 times [2020-09-25 10:05:39,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:39,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21422557] [2020-09-25 10:05:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:39,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:39,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:40,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:40,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:05:40,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:05:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 833 [2020-09-25 10:05:40,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:40,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:05:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:05:40,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:40,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:40,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:40,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:40,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:05:40,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:40,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:40,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:40,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:40,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:40,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:05:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:40,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:40,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:40,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:40,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:05:40,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 10:05:40,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:40,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:05:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:05:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:40,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21422557] [2020-09-25 10:05:40,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:40,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:05:40,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991692793] [2020-09-25 10:05:40,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:05:40,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:40,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:05:40,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:40,942 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 6 states. [2020-09-25 10:05:41,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:41,182 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-09-25 10:05:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:05:41,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-09-25 10:05:41,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:41,185 INFO L225 Difference]: With dead ends: 85 [2020-09-25 10:05:41,185 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 10:05:41,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:05:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 10:05:41,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2020-09-25 10:05:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 10:05:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-09-25 10:05:41,198 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 39 [2020-09-25 10:05:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:41,198 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-09-25 10:05:41,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:05:41,198 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-09-25 10:05:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 10:05:41,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:41,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:41,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:41,201 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:41,201 INFO L82 PathProgramCache]: Analyzing trace with hash 278069346, now seen corresponding path program 1 times [2020-09-25 10:05:41,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:41,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211153007] [2020-09-25 10:05:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:41,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:41,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:42,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:46,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:05:46,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:05:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:05:46,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:46,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:05:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:05:46,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:46,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:46,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:46,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:46,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:46,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:46,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:46,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:05:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:46,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 10:05:46,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:46,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:05:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:05:46,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:46,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:05:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:46,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:05:46,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:46,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:05:46,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:46,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:05:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:05:46,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:46,439 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 10:05:46,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211153007] [2020-09-25 10:05:46,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:46,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:05:46,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861283804] [2020-09-25 10:05:46,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:05:46,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:46,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:05:46,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:05:46,442 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 9 states. [2020-09-25 10:05:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:46,756 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-09-25 10:05:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:05:46,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 10:05:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:46,758 INFO L225 Difference]: With dead ends: 82 [2020-09-25 10:05:46,758 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 10:05:46,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:05:46,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 10:05:46,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2020-09-25 10:05:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 10:05:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2020-09-25 10:05:46,769 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 45 [2020-09-25 10:05:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:46,770 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2020-09-25 10:05:46,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:05:46,770 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2020-09-25 10:05:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 10:05:46,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:46,774 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:05:46,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:05:46,774 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:46,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:46,775 INFO L82 PathProgramCache]: Analyzing trace with hash -512695656, now seen corresponding path program 2 times [2020-09-25 10:05:46,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:46,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693500298] [2020-09-25 10:05:46,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:46,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:48,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:05:51,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:05:51,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:05:51,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:05:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:05:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:05:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:51,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:51,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:51,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:51,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:51,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:51,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:51,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:51,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:05:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:51,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:51,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:05:51,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:51,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:05:51,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:52,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:05:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:52,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:52,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:05:52,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 10:05:52,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:52,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:05:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:05:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:05:52,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:52,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 10:05:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:52,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:52,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:05:52,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:52,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 10:05:52,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:52,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:52,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:05:52,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:05:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:05:52,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 10:05:52,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693500298] [2020-09-25 10:05:52,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:52,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 10:05:52,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859789806] [2020-09-25 10:05:52,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:05:52,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:52,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:05:52,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:05:52,569 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 13 states. [2020-09-25 10:05:53,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:53,396 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2020-09-25 10:05:53,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:05:53,396 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2020-09-25 10:05:53,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:53,399 INFO L225 Difference]: With dead ends: 103 [2020-09-25 10:05:53,399 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 10:05:53,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:05:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 10:05:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-09-25 10:05:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 10:05:53,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2020-09-25 10:05:53,415 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 63 [2020-09-25 10:05:53,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:53,416 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2020-09-25 10:05:53,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:05:53,416 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2020-09-25 10:05:53,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 10:05:53,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:53,421 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:05:53,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:05:53,422 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:53,422 INFO L82 PathProgramCache]: Analyzing trace with hash -54593449, now seen corresponding path program 1 times [2020-09-25 10:05:53,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:53,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241794573] [2020-09-25 10:05:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:53,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:05:55,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:05:55,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2046 [2020-09-25 10:05:55,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:05:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:05:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:05:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:55,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:55,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:55,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:55,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:55,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:05:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:55,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:55,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:55,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:05:55,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:05:55,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:55,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:05:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:05:55,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:55,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:05:55,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:05:55,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:55,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:05:55,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:55,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 10:05:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:05:55,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:55,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:05:55,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:05:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 10:05:55,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241794573] [2020-09-25 10:05:55,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:55,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 10:05:55,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498637201] [2020-09-25 10:05:55,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:05:55,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:55,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:05:55,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:05:55,750 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 11 states. [2020-09-25 10:05:56,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:56,028 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2020-09-25 10:05:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:05:56,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-09-25 10:05:56,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:56,029 INFO L225 Difference]: With dead ends: 129 [2020-09-25 10:05:56,030 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 10:05:56,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:05:56,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 10:05:56,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2020-09-25 10:05:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 10:05:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-09-25 10:05:56,038 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 64 [2020-09-25 10:05:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:56,039 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-09-25 10:05:56,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:05:56,039 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-09-25 10:05:56,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 10:05:56,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:56,040 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-09-25 10:05:56,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:05:56,041 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:56,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:56,041 INFO L82 PathProgramCache]: Analyzing trace with hash -182223992, now seen corresponding path program 1 times [2020-09-25 10:05:56,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:56,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479624757] [2020-09-25 10:05:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:56,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:56,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:01,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:06:01,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:06:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:06:01,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:01,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:06:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:06:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 10:06:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 20 [2020-09-25 10:06:01,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:01,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:01,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:01,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:01,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:06:01,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:01,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:01,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:06:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:01,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:06:01,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 10:06:01,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:01,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:06:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:06:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:01,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 10:06:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:01,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:01,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:01,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:01,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 10:06:01,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:01,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:06:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:06:01,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:06:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 10:06:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 10:06:02,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:06:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 10:06:02,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479624757] [2020-09-25 10:06:02,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:02,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:06:02,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194600046] [2020-09-25 10:06:02,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:06:02,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:02,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:06:02,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:06:02,447 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 21 states. [2020-09-25 10:06:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:04,887 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2020-09-25 10:06:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 10:06:04,887 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 75 [2020-09-25 10:06:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:04,889 INFO L225 Difference]: With dead ends: 125 [2020-09-25 10:06:04,889 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 10:06:04,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=365, Invalid=1797, Unknown=0, NotChecked=0, Total=2162 [2020-09-25 10:06:04,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 10:06:04,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 115. [2020-09-25 10:06:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 10:06:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2020-09-25 10:06:04,904 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 75 [2020-09-25 10:06:04,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:04,904 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2020-09-25 10:06:04,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:06:04,905 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2020-09-25 10:06:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 10:06:04,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:04,906 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-09-25 10:06:04,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:06:04,907 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:04,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1600093543, now seen corresponding path program 1 times [2020-09-25 10:06:04,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:04,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154906705] [2020-09-25 10:06:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:04,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:04,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 10:06:09,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:06:09,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:06:09,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:06:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 10:06:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:06:09,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:09,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:09,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:09,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:10,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:06:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:10,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:10,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:06:10,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:10,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 10:06:10,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:10,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 10:06:10,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 10:06:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:10,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:06:10,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:06:10,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:10,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 10:06:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:10,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:10,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:10,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:10,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:06:10,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:10,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 10:06:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:10,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 10:06:10,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154906705] [2020-09-25 10:06:10,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:10,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:06:10,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915551856] [2020-09-25 10:06:10,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:06:10,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:10,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:06:10,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:06:10,285 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand 13 states. [2020-09-25 10:06:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:10,735 INFO L93 Difference]: Finished difference Result 200 states and 221 transitions. [2020-09-25 10:06:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:06:10,735 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-09-25 10:06:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:10,737 INFO L225 Difference]: With dead ends: 200 [2020-09-25 10:06:10,738 INFO L226 Difference]: Without dead ends: 134 [2020-09-25 10:06:10,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:06:10,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-25 10:06:10,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2020-09-25 10:06:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 10:06:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-09-25 10:06:10,752 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 76 [2020-09-25 10:06:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:10,753 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-09-25 10:06:10,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:06:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-09-25 10:06:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 10:06:10,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:10,755 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, 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] [2020-09-25 10:06:10,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:06:10,755 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:10,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1865398913, now seen corresponding path program 1 times [2020-09-25 10:06:10,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:10,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896823064] [2020-09-25 10:06:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:10,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:11,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:15,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:15,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:06:15,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:06:15,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:15,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:06:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 10:06:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 10:06:15,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:15,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:15,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:15,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:15,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:15,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:15,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:15,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:15,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:06:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:15,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:15,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:06:15,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:06:15,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:15,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 10:06:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:16,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:16,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 10:06:16,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:16,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:06:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:16,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:16,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 10:06:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:16,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:06:16,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:16,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 10:06:16,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:16,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:16,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:06:16,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 10:06:16,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896823064] [2020-09-25 10:06:16,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:16,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:06:16,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829487447] [2020-09-25 10:06:16,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:06:16,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:16,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:06:16,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:06:16,448 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 13 states. [2020-09-25 10:06:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:17,597 INFO L93 Difference]: Finished difference Result 152 states and 166 transitions. [2020-09-25 10:06:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:06:17,599 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-09-25 10:06:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:17,601 INFO L225 Difference]: With dead ends: 152 [2020-09-25 10:06:17,601 INFO L226 Difference]: Without dead ends: 147 [2020-09-25 10:06:17,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:06:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-09-25 10:06:17,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 101. [2020-09-25 10:06:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 10:06:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2020-09-25 10:06:17,613 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 88 [2020-09-25 10:06:17,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:17,613 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2020-09-25 10:06:17,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:06:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2020-09-25 10:06:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 10:06:17,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:17,615 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, 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] [2020-09-25 10:06:17,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:06:17,615 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:17,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1382895989, now seen corresponding path program 2 times [2020-09-25 10:06:17,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:17,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312378870] [2020-09-25 10:06:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:19,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking...