/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:18:15,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:18:15,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:18:15,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:18:15,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:18:15,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:18:15,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:18:15,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:18:15,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:18:15,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:18:15,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:18:15,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:18:15,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:18:15,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:18:15,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:18:15,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:18:15,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:18:15,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:18:15,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:18:15,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:18:15,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:18:15,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:18:15,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:18:15,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:18:15,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:18:15,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:18:15,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:18:15,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:18:15,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:18:15,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:18:15,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:18:15,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:18:16,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:18:16,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:18:16,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:18:16,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:18:16,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:18:16,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:18:16,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:18:16,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:18:16,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:18:16,014 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 [2020-10-27 01:18:16,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:18:16,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:18:16,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:18:16,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:18:16,054 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:18:16,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:18:16,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:18:16,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:18:16,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:18:16,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:18:16,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:18:16,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:18:16,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:18:16,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:18:16,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:18:16,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:18:16,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:18:16,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:18:16,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:18:16,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:18:16,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:18:16,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:18:16,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:18:16,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:18:16,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:18:16,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:18:16,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:18:16,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:18:16,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:18:16,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:18:16,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:18:16,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:18:16,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:18:16,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:18:16,519 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:18:16,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2020-10-27 01:18:16,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f530e751b/ccc8e48f674b41fbbb06e1bcd45e7f84/FLAG1e3da5ea1 [2020-10-27 01:18:17,348 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:18:17,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2020-10-27 01:18:17,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f530e751b/ccc8e48f674b41fbbb06e1bcd45e7f84/FLAG1e3da5ea1 [2020-10-27 01:18:17,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f530e751b/ccc8e48f674b41fbbb06e1bcd45e7f84 [2020-10-27 01:18:17,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:18:17,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:18:17,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:18:17,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:18:17,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:18:17,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:18:17" (1/1) ... [2020-10-27 01:18:17,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23778980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:17, skipping insertion in model container [2020-10-27 01:18:17,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:18:17" (1/1) ... [2020-10-27 01:18:17,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:18:17,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:18:18,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:18:18,227 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:18:18,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:18:18,357 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:18:18,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:18 WrapperNode [2020-10-27 01:18:18,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:18:18,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:18:18,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:18:18,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:18:18,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:18" (1/1) ... [2020-10-27 01:18:18,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:18" (1/1) ... [2020-10-27 01:18:18,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:18" (1/1) ... [2020-10-27 01:18:18,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:18" (1/1) ... [2020-10-27 01:18:18,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:18" (1/1) ... [2020-10-27 01:18:18,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:18" (1/1) ... [2020-10-27 01:18:18,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:18" (1/1) ... [2020-10-27 01:18:18,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:18:18,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:18:18,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:18:18,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:18:18,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:18" (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 [2020-10-27 01:18:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:18:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:18:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:18:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:18:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:18:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 01:18:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-27 01:18:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2020-10-27 01:18:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-27 01:18:18,560 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-27 01:18:18,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2020-10-27 01:18:18,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:18:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:18:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:18:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:18:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:18:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:18:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:18:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:18:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:18:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:18:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:18:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:18:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:18:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:18:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:18:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:18:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:18:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:18:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:18:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:18:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:18:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:18:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:18:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:18:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:18:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:18:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:18:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:18:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:18:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:18:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:18:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:18:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:18:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:18:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:18:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:18:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:18:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:18:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:18:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:18:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:18:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:18:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:18:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:18:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:18:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:18:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:18:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:18:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:18:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:18:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:18:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:18:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:18:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:18:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:18:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:18:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:18:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:18:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:18:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:18:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:18:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:18:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:18:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:18:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:18:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:18:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:18:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:18:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:18:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:18:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:18:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:18:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:18:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:18:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:18:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:18:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:18:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:18:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:18:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:18:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:18:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:18:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:18:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:18:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:18:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:18:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:18:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:18:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:18:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:18:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:18:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:18:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:18:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:18:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:18:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:18:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:18:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:18:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:18:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:18:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:18:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:18:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:18:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:18:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:18:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:18:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:18:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:18:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:18:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:18:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:18:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:18:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 01:18:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-27 01:18:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:18:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:18:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2020-10-27 01:18:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-27 01:18:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:18:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-27 01:18:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2020-10-27 01:18:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:18:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:18:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:18:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:18:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:18:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:18:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:18:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:18:18,937 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 01:18:19,217 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:18:19,218 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-27 01:18:19,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:18:19 BoogieIcfgContainer [2020-10-27 01:18:19,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:18:19,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:18:19,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:18:19,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:18:19,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:18:17" (1/3) ... [2020-10-27 01:18:19,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ac8d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:18:19, skipping insertion in model container [2020-10-27 01:18:19,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:18:18" (2/3) ... [2020-10-27 01:18:19,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ac8d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:18:19, skipping insertion in model container [2020-10-27 01:18:19,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:18:19" (3/3) ... [2020-10-27 01:18:19,230 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2020-10-27 01:18:19,243 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:18:19,248 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:18:19,262 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:18:19,290 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:18:19,291 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:18:19,291 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:18:19,291 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:18:19,291 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:18:19,291 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:18:19,291 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:18:19,291 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:18:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-27 01:18:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:18:19,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:19,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:19,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:19,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:19,324 INFO L82 PathProgramCache]: Analyzing trace with hash 509728839, now seen corresponding path program 1 times [2020-10-27 01:18:19,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:19,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398365626] [2020-10-27 01:18:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:19,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:19,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:19,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:19,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:18:19,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:18:19,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-27 01:18:19,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:18:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:18:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:18:19,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:18:20,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:20,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:20,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:20,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:20,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:20,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:18:20,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:18:20,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398365626] [2020-10-27 01:18:20,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:18:20,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:18:20,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256736370] [2020-10-27 01:18:20,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:18:20,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:20,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:18:20,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:18:20,133 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-10-27 01:18:20,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:20,487 INFO L93 Difference]: Finished difference Result 161 states and 239 transitions. [2020-10-27 01:18:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:18:20,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-27 01:18:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:20,499 INFO L225 Difference]: With dead ends: 161 [2020-10-27 01:18:20,500 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 01:18:20,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:18:20,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 01:18:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2020-10-27 01:18:20,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 01:18:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2020-10-27 01:18:20,559 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 13 [2020-10-27 01:18:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:20,559 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2020-10-27 01:18:20,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:18:20,559 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2020-10-27 01:18:20,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 01:18:20,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:20,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:20,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:18:20,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:20,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:20,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1450486145, now seen corresponding path program 1 times [2020-10-27 01:18:20,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:20,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519287200] [2020-10-27 01:18:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:20,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 01:18:22,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:18:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1463 [2020-10-27 01:18:22,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:18:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:18:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 01:18:22,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:22,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:18:22,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 01:18:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 01:18:22,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:18:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 01:18:22,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:18:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:18:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:18:22,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:22,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:18:22,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:18:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:22,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:22,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:22,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:22,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:22,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:18:22,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519287200] [2020-10-27 01:18:22,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:22,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 01:18:22,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734312965] [2020-10-27 01:18:22,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:18:22,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:22,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:18:22,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:18:22,397 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand 6 states. [2020-10-27 01:18:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:22,635 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2020-10-27 01:18:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:18:22,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-27 01:18:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:22,638 INFO L225 Difference]: With dead ends: 106 [2020-10-27 01:18:22,638 INFO L226 Difference]: Without dead ends: 87 [2020-10-27 01:18:22,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:18:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-27 01:18:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 70. [2020-10-27 01:18:22,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 01:18:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2020-10-27 01:18:22,658 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 40 [2020-10-27 01:18:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:22,659 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2020-10-27 01:18:22,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:18:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2020-10-27 01:18:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 01:18:22,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:22,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 01:18:22,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:18:22,665 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:22,665 INFO L82 PathProgramCache]: Analyzing trace with hash 99019871, now seen corresponding path program 2 times [2020-10-27 01:18:22,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:22,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336390121] [2020-10-27 01:18:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:22,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:23,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:24,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:24,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 01:18:24,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:18:24,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2197 [2020-10-27 01:18:24,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:18:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:18:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 01:18:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:24,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:24,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:24,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:24,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:24,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:24,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:18:24,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:24,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:24,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:18:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:25,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:25,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 01:18:25,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:25,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 01:18:25,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:18:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 01:18:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:18:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:25,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:25,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:18:25,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 01:18:25,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:18:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:18:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:25,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:18:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:25,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:25,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:25,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:25,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:25,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:18:25,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:18:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:18:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:18:25,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336390121] [2020-10-27 01:18:25,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:18:25,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 01:18:25,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515463550] [2020-10-27 01:18:25,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:18:25,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:25,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:18:25,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:18:25,339 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand 12 states. [2020-10-27 01:18:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:25,922 INFO L93 Difference]: Finished difference Result 152 states and 191 transitions. [2020-10-27 01:18:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:18:25,922 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-27 01:18:25,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:25,924 INFO L225 Difference]: With dead ends: 152 [2020-10-27 01:18:25,924 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 01:18:25,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:18:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 01:18:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-10-27 01:18:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 01:18:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2020-10-27 01:18:25,938 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 45 [2020-10-27 01:18:25,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:25,939 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2020-10-27 01:18:25,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:18:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2020-10-27 01:18:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 01:18:25,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:25,941 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:25,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:18:25,941 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:25,942 INFO L82 PathProgramCache]: Analyzing trace with hash 311779596, now seen corresponding path program 1 times [2020-10-27 01:18:25,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:25,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302227444] [2020-10-27 01:18:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:25,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:28,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:28,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:18:28,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:18:28,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2345 [2020-10-27 01:18:28,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:18:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:18:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 01:18:28,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:28,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:28,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:28,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:28,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:28,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:28,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:28,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:18:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:28,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:28,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:28,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:18:28,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:28,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 01:18:28,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:18:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 01:18:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:28,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:18:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:28,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:28,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:18:28,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:28,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 01:18:28,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:18:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 01:18:28,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:28,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:18:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:28,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:28,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:18:28,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:28,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 01:18:28,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:18:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:18:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:18:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:18:28,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302227444] [2020-10-27 01:18:28,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:28,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 01:18:28,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211380328] [2020-10-27 01:18:28,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 01:18:28,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:28,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 01:18:28,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:18:28,890 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand 13 states. [2020-10-27 01:18:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:29,545 INFO L93 Difference]: Finished difference Result 165 states and 207 transitions. [2020-10-27 01:18:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:18:29,545 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-27 01:18:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:29,547 INFO L225 Difference]: With dead ends: 165 [2020-10-27 01:18:29,547 INFO L226 Difference]: Without dead ends: 87 [2020-10-27 01:18:29,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:18:29,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-27 01:18:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-10-27 01:18:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 01:18:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2020-10-27 01:18:29,571 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 48 [2020-10-27 01:18:29,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:29,573 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2020-10-27 01:18:29,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 01:18:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2020-10-27 01:18:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 01:18:29,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:29,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:29,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:18:29,581 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:29,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:29,582 INFO L82 PathProgramCache]: Analyzing trace with hash -734981825, now seen corresponding path program 2 times [2020-10-27 01:18:29,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:29,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777337438] [2020-10-27 01:18:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:29,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:30,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 01:18:32,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:18:32,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2449 [2020-10-27 01:18:32,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:18:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:18:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 01:18:32,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:32,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:32,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:32,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:32,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:32,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:32,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:32,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:18:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:18:32,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 01:18:32,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:18:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:32,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:18:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 01:18:32,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:32,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:18:32,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:32,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:32,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:32,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:18:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:32,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:32,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 01:18:32,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:32,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:18:32,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:32,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 01:18:32,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777337438] [2020-10-27 01:18:32,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:18:32,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:18:32,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914414383] [2020-10-27 01:18:32,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:18:32,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:32,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:18:32,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:18:32,285 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand 6 states. [2020-10-27 01:18:32,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:32,594 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2020-10-27 01:18:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:18:32,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-10-27 01:18:32,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:32,596 INFO L225 Difference]: With dead ends: 98 [2020-10-27 01:18:32,597 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 01:18:32,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:18:32,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 01:18:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-10-27 01:18:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 01:18:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 106 transitions. [2020-10-27 01:18:32,620 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 106 transitions. Word has length 51 [2020-10-27 01:18:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:32,621 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 106 transitions. [2020-10-27 01:18:32,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:18:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 106 transitions. [2020-10-27 01:18:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 01:18:32,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:32,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:32,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:18:32,625 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:32,625 INFO L82 PathProgramCache]: Analyzing trace with hash 608334314, now seen corresponding path program 1 times [2020-10-27 01:18:32,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:32,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455154779] [2020-10-27 01:18:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:34,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:37,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:37,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 01:18:37,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:18:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 01:18:37,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:18:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:18:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 01:18:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:37,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:37,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:37,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:37,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:37,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:37,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:18:37,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:18:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:37,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 01:18:37,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 01:18:37,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:18:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:18:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:18:37,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:37,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:18:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:38,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:38,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 01:18:38,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:38,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 01:18:38,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:38,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:18:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 01:18:38,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:38,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:18:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:38,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:38,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 01:18:38,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 01:18:38,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:18:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:38,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:18:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:18:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 01:18:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:38,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:38,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:38,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:38,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:38,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:18:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:38,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:18:38,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455154779] [2020-10-27 01:18:38,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:38,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:18:38,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773301458] [2020-10-27 01:18:38,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:18:38,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:38,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:18:38,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:18:38,277 INFO L87 Difference]: Start difference. First operand 85 states and 106 transitions. Second operand 14 states. [2020-10-27 01:18:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:39,140 INFO L93 Difference]: Finished difference Result 175 states and 217 transitions. [2020-10-27 01:18:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 01:18:39,143 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-27 01:18:39,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:39,145 INFO L225 Difference]: With dead ends: 175 [2020-10-27 01:18:39,145 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 01:18:39,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:18:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 01:18:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-10-27 01:18:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 01:18:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2020-10-27 01:18:39,157 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 62 [2020-10-27 01:18:39,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:39,157 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2020-10-27 01:18:39,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:18:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2020-10-27 01:18:39,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 01:18:39,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:39,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:39,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:18:39,159 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:39,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:39,159 INFO L82 PathProgramCache]: Analyzing trace with hash 979389661, now seen corresponding path program 2 times [2020-10-27 01:18:39,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:39,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700006679] [2020-10-27 01:18:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:39,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:42,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:44,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:44,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 01:18:44,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:18:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 01:18:44,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:18:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:18:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 01:18:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:18:44,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:44,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:44,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:44,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:44,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:44,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:18:44,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:44,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:18:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:44,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:44,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:44,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:18:44,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 01:18:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:18:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:44,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 01:18:44,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:44,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:18:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:44,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:44,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:18:44,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:44,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 01:18:44,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:18:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:18:44,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:44,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:18:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:44,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:44,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:18:44,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:44,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 01:18:44,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:18:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:18:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:44,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 01:18:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:44,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:44,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:44,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:44,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:18:44,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:18:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 01:18:44,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700006679] [2020-10-27 01:18:44,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:44,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 01:18:44,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570577645] [2020-10-27 01:18:44,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 01:18:44,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:45,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 01:18:45,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:18:45,001 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand 16 states. [2020-10-27 01:18:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:45,734 INFO L93 Difference]: Finished difference Result 155 states and 199 transitions. [2020-10-27 01:18:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:18:45,734 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-10-27 01:18:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:45,736 INFO L225 Difference]: With dead ends: 155 [2020-10-27 01:18:45,736 INFO L226 Difference]: Without dead ends: 125 [2020-10-27 01:18:45,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:18:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-27 01:18:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-27 01:18:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 01:18:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2020-10-27 01:18:45,752 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 65 [2020-10-27 01:18:45,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:45,752 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2020-10-27 01:18:45,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 01:18:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2020-10-27 01:18:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 01:18:45,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:45,754 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:45,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:18:45,754 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:45,755 INFO L82 PathProgramCache]: Analyzing trace with hash -156587766, now seen corresponding path program 3 times [2020-10-27 01:18:45,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:45,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297320260] [2020-10-27 01:18:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:46,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:46,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:50,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 01:18:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:18:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 01:18:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:18:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:18:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 01:18:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:50,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:50,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:50,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:50,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:50,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:18:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:50,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:50,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 01:18:50,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 01:18:50,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:18:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 01:18:50,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:50,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:18:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:50,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:50,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:50,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:18:50,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:50,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:18:50,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:50,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:18:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:50,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:50,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:18:50,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:50,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:18:50,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:50,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:50,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:50,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 01:18:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:51,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:51,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:51,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:51,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:18:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:51,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-27 01:18:51,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297320260] [2020-10-27 01:18:51,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:51,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:18:51,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368677766] [2020-10-27 01:18:51,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:18:51,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:51,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:18:51,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:18:51,018 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand 7 states. [2020-10-27 01:18:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:51,291 INFO L93 Difference]: Finished difference Result 166 states and 215 transitions. [2020-10-27 01:18:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:18:51,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-27 01:18:51,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:51,293 INFO L225 Difference]: With dead ends: 166 [2020-10-27 01:18:51,293 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 01:18:51,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:18:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 01:18:51,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-27 01:18:51,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-27 01:18:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2020-10-27 01:18:51,309 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 147 transitions. Word has length 68 [2020-10-27 01:18:51,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:51,309 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 147 transitions. [2020-10-27 01:18:51,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:18:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 147 transitions. [2020-10-27 01:18:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 01:18:51,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:51,311 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:51,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:18:51,311 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:51,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1397625576, now seen corresponding path program 4 times [2020-10-27 01:18:51,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:51,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852256302] [2020-10-27 01:18:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:51,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:51,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:56,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:56,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 01:18:56,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:18:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:18:56,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:18:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:18:56,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 01:18:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:56,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:18:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:56,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:56,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:56,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:18:56,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:56,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:56,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:18:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:56,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:56,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 01:18:56,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-27 01:18:56,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:18:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 01:18:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:56,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:18:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:56,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:56,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:18:56,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 01:18:56,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:18:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 01:18:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:18:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:56,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:56,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:56,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:18:56,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:56,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 01:18:56,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:18:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:18:56,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 01:18:56,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:57,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 01:18:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:57,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:18:57,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:18:57,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:18:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:18:57,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:18:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:18:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:18:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:18:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:18:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 01:18:57,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852256302] [2020-10-27 01:18:57,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:18:57,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 01:18:57,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642600097] [2020-10-27 01:18:57,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 01:18:57,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:18:57,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 01:18:57,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:18:57,123 INFO L87 Difference]: Start difference. First operand 117 states and 147 transitions. Second operand 17 states. [2020-10-27 01:18:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:18:57,957 INFO L93 Difference]: Finished difference Result 182 states and 235 transitions. [2020-10-27 01:18:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 01:18:57,957 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-27 01:18:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:18:57,959 INFO L225 Difference]: With dead ends: 182 [2020-10-27 01:18:57,959 INFO L226 Difference]: Without dead ends: 151 [2020-10-27 01:18:57,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2020-10-27 01:18:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-27 01:18:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 117. [2020-10-27 01:18:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-27 01:18:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2020-10-27 01:18:57,993 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 147 transitions. Word has length 73 [2020-10-27 01:18:57,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:18:57,994 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 147 transitions. [2020-10-27 01:18:57,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 01:18:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 147 transitions. [2020-10-27 01:18:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 01:18:58,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:18:58,010 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:18:58,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:18:58,010 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:18:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:18:58,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1376709891, now seen corresponding path program 5 times [2020-10-27 01:18:58,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:18:58,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201809191] [2020-10-27 01:18:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:18:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:18:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:18:58,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:03,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:03,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 01:19:03,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:19:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 01:19:03,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:19:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:19:03,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 01:19:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:03,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:03,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:03,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:03,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:03,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:03,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:03,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:03,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:03,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:03,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:03,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:19:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:03,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:03,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:03,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:19:03,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 01:19:03,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:19:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 01:19:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:03,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:19:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:03,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:03,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:19:03,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:03,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 01:19:03,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:19:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:19:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 01:19:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:03,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:03,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:03,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:19:03,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 01:19:03,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:19:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:19:03,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:03,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 01:19:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:03,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:03,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:03,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:19:03,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:19:03,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:19:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 01:19:03,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201809191] [2020-10-27 01:19:03,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:03,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 01:19:03,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176391850] [2020-10-27 01:19:03,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 01:19:03,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:03,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 01:19:03,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:19:03,646 INFO L87 Difference]: Start difference. First operand 117 states and 147 transitions. Second operand 17 states. [2020-10-27 01:19:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:04,526 INFO L93 Difference]: Finished difference Result 183 states and 239 transitions. [2020-10-27 01:19:04,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 01:19:04,529 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-10-27 01:19:04,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:04,530 INFO L225 Difference]: With dead ends: 183 [2020-10-27 01:19:04,530 INFO L226 Difference]: Without dead ends: 155 [2020-10-27 01:19:04,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2020-10-27 01:19:04,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-27 01:19:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 130. [2020-10-27 01:19:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 01:19:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 164 transitions. [2020-10-27 01:19:04,563 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 164 transitions. Word has length 75 [2020-10-27 01:19:04,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:04,563 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 164 transitions. [2020-10-27 01:19:04,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 01:19:04,563 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 164 transitions. [2020-10-27 01:19:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 01:19:04,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:04,567 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:04,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:19:04,567 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:04,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:04,572 INFO L82 PathProgramCache]: Analyzing trace with hash -190569697, now seen corresponding path program 6 times [2020-10-27 01:19:04,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:04,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904671040] [2020-10-27 01:19:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:04,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:04,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:05,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:09,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:09,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 01:19:09,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:19:09,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 01:19:09,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 01:19:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:19:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 01:19:09,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:09,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:09,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:09,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:09,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:09,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:09,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:19:09,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:09,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:09,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:19:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:12,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 01:19:12,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:19:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2282 [2020-10-27 01:19:12,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 01:19:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:19:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 01:19:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0