/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=DEEPEST --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_length_check-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:57:47,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:57:47,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:57:47,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:57:47,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:57:47,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:57:47,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:57:47,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:57:47,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:57:47,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:57:47,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:57:47,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:57:47,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:57:47,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:57:47,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:57:47,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:57:47,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:57:47,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:57:47,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:57:47,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:57:47,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:57:47,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:57:47,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:57:47,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:57:47,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:57:47,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:57:47,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:57:47,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:57:47,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:57:47,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:57:47,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:57:47,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:57:47,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:57:47,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:57:47,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:57:47,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:57:47,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:57:47,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:57:47,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:57:47,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:57:47,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:57:47,838 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 19:57:47,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:57:47,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:57:47,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:57:47,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:57:47,890 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:57:47,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:57:47,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:57:47,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:57:47,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:57:47,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:57:47,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:57:47,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:57:47,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:57:47,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:57:47,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:57:47,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:57:47,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:57:47,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:57:47,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:57:47,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:57:47,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:57:47,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:57:47,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:57:47,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:57:47,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:57:47,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:57:47,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:57:47,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:57:47,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:57:47,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:57:48,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:57:48,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:57:48,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:57:48,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:57:48,361 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:57:48,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-10-27 19:57:48,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c3b06f1/7a74567861f2450789ee16fd63d0730e/FLAG9e1a94148 [2020-10-27 19:57:49,094 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:57:49,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-10-27 19:57:49,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c3b06f1/7a74567861f2450789ee16fd63d0730e/FLAG9e1a94148 [2020-10-27 19:57:49,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c3b06f1/7a74567861f2450789ee16fd63d0730e [2020-10-27 19:57:49,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:57:49,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:57:49,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:57:49,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:57:49,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:57:49,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:57:49" (1/1) ... [2020-10-27 19:57:49,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e014ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:49, skipping insertion in model container [2020-10-27 19:57:49,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:57:49" (1/1) ... [2020-10-27 19:57:49,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:57:49,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:57:49,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:57:49,943 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:57:50,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:57:50,127 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:57:50,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:50 WrapperNode [2020-10-27 19:57:50,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:57:50,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:57:50,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:57:50,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:57:50,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:50" (1/1) ... [2020-10-27 19:57:50,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:50" (1/1) ... [2020-10-27 19:57:50,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:50" (1/1) ... [2020-10-27 19:57:50,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:50" (1/1) ... [2020-10-27 19:57:50,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:50" (1/1) ... [2020-10-27 19:57:50,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:50" (1/1) ... [2020-10-27 19:57:50,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:50" (1/1) ... [2020-10-27 19:57:50,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:57:50,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:57:50,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:57:50,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:57:50,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:50" (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 19:57:50,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:57:50,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:57:50,369 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:57:50,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 19:57:50,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 19:57:50,370 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 19:57:50,370 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-27 19:57:50,370 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-27 19:57:50,370 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-27 19:57:50,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:57:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:57:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:57:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 19:57:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 19:57:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:57:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:57:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:57:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 19:57:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 19:57:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 19:57:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 19:57:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 19:57:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 19:57:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 19:57:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 19:57:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 19:57:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 19:57:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 19:57:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 19:57:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 19:57:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 19:57:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 19:57:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 19:57:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 19:57:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 19:57:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 19:57:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 19:57:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 19:57:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 19:57:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 19:57:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 19:57:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 19:57:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 19:57:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 19:57:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 19:57:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 19:57:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 19:57:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 19:57:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 19:57:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 19:57:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 19:57:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 19:57:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 19:57:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 19:57:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 19:57:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 19:57:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 19:57:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 19:57:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 19:57:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 19:57:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 19:57:50,380 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 19:57:50,380 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 19:57:50,380 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 19:57:50,380 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 19:57:50,380 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 19:57:50,380 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 19:57:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 19:57:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 19:57:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 19:57:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 19:57:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 19:57:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 19:57:50,382 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 19:57:50,382 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 19:57:50,382 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 19:57:50,382 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 19:57:50,382 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 19:57:50,382 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 19:57:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 19:57:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 19:57:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:57:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 19:57:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 19:57:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 19:57:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 19:57:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 19:57:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 19:57:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 19:57:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 19:57:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 19:57:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 19:57:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 19:57:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 19:57:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 19:57:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 19:57:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 19:57:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 19:57:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 19:57:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 19:57:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 19:57:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 19:57:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 19:57:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 19:57:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 19:57:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 19:57:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 19:57:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 19:57:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 19:57:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 19:57:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 19:57:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 19:57:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 19:57:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 19:57:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 19:57:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 19:57:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 19:57:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 19:57:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 19:57:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 19:57:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 19:57:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 19:57:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-27 19:57:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 19:57:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 19:57:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-27 19:57:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 19:57:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-27 19:57:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:57:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:57:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:57:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:57:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:57:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:57:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:57:50,935 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 19:57:51,115 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:57:51,116 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 19:57:51,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:57:51 BoogieIcfgContainer [2020-10-27 19:57:51,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:57:51,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:57:51,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:57:51,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:57:51,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:57:49" (1/3) ... [2020-10-27 19:57:51,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7d1b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:57:51, skipping insertion in model container [2020-10-27 19:57:51,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:50" (2/3) ... [2020-10-27 19:57:51,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7d1b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:57:51, skipping insertion in model container [2020-10-27 19:57:51,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:57:51" (3/3) ... [2020-10-27 19:57:51,128 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-10-27 19:57:51,140 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:57:51,146 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:57:51,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:57:51,190 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:57:51,190 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:57:51,190 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:57:51,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:57:51,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:57:51,191 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:57:51,191 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:57:51,191 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:57:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-27 19:57:51,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 19:57:51,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:51,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:57:51,218 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:51,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1271350858, now seen corresponding path program 1 times [2020-10-27 19:57:51,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:51,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123094123] [2020-10-27 19:57:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:51,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:51,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 19:57:51,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:57:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-27 19:57:51,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:51,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 19:57:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:51,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:57:51,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:51,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:51,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:51,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:57:51,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:51,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 19:57:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:51,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:51,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:57:51,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:57:51,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:51,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:57:51,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:51,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:51,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 19:57:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:51,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:51,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:51,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:57:51,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:51,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:57:51,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 19:57:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:51,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:51,830 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 19:57:51,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123094123] [2020-10-27 19:57:51,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:57:51,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:57:51,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117449091] [2020-10-27 19:57:51,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:57:51,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:51,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:57:51,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:57:51,862 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-27 19:57:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:57:52,261 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2020-10-27 19:57:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:57:52,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-27 19:57:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:57:52,274 INFO L225 Difference]: With dead ends: 96 [2020-10-27 19:57:52,274 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 19:57:52,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:57:52,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 19:57:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2020-10-27 19:57:52,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 19:57:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-27 19:57:52,327 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-10-27 19:57:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:57:52,328 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-27 19:57:52,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:57:52,328 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-27 19:57:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 19:57:52,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:52,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:57:52,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:57:52,330 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:52,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:52,331 INFO L82 PathProgramCache]: Analyzing trace with hash -272217543, now seen corresponding path program 1 times [2020-10-27 19:57:52,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:52,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883072260] [2020-10-27 19:57:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:52,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:52,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:52,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:52,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:52,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 19:57:52,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:57:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-27 19:57:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:57:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:57:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:57:52,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:57:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:52,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:52,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:52,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:57:52,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:52,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:52,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:52,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:57:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:52,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:52,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:57:52,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 19:57:52,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:57:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:57:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:57:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:53,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 19:57:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:53,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:53,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:57:53,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:53,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:57:53,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 19:57:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:53,043 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 19:57:53,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883072260] [2020-10-27 19:57:53,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:57:53,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 19:57:53,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269033882] [2020-10-27 19:57:53,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:57:53,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:53,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:57:53,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:57:53,048 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-10-27 19:57:53,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:57:53,503 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-27 19:57:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:57:53,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-27 19:57:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:57:53,506 INFO L225 Difference]: With dead ends: 63 [2020-10-27 19:57:53,506 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 19:57:53,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:57:53,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 19:57:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-10-27 19:57:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 19:57:53,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-27 19:57:53,520 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 27 [2020-10-27 19:57:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:57:53,521 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-27 19:57:53,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:57:53,521 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-27 19:57:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 19:57:53,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:53,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:57:53,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:57:53,523 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:53,524 INFO L82 PathProgramCache]: Analyzing trace with hash 545430907, now seen corresponding path program 1 times [2020-10-27 19:57:53,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:53,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138876501] [2020-10-27 19:57:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:53,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:53,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 19:57:53,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:53,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 19:57:53,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:53,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:57:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:57:53,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 19:57:53,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:53,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:53,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:53,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:53,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:53,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:57:53,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:53,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:53,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:57:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:53,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:53,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:57:53,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 19:57:53,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:57:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:57:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:57:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:53,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 19:57:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:53,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:53,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:57:53,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:57:53,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 19:57:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:53,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 19:57:53,854 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 19:57:53,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138876501] [2020-10-27 19:57:53,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:57:53,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 19:57:53,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955517944] [2020-10-27 19:57:53,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:57:53,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:53,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:57:53,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:57:53,860 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2020-10-27 19:57:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:57:54,193 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-27 19:57:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 19:57:54,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-27 19:57:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:57:54,196 INFO L225 Difference]: With dead ends: 53 [2020-10-27 19:57:54,197 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 19:57:54,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:57:54,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 19:57:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-10-27 19:57:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 19:57:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-27 19:57:54,205 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 27 [2020-10-27 19:57:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:57:54,205 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-27 19:57:54,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:57:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-27 19:57:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 19:57:54,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:54,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:57:54,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:57:54,207 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:54,208 INFO L82 PathProgramCache]: Analyzing trace with hash -991161197, now seen corresponding path program 1 times [2020-10-27 19:57:54,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:54,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781685899] [2020-10-27 19:57:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:54,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:54,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:54,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:54,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:54,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:54,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:54,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:55,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:57,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:57,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 19:57:57,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 19:57:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3742 [2020-10-27 19:57:57,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:57:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 19:57:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 19:57:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:58,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:58,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:58,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:58,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:58,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:57:58,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:58,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:57:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:58,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:58,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:57:58,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:57:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 19:57:58,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:57:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 19:57:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 19:57:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:58,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:58,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:58,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:57:58,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:58,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:57:58,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:57:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:57:58,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:57:58,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:57:58,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781685899] [2020-10-27 19:57:58,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:57:58,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 19:57:58,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730518682] [2020-10-27 19:57:58,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 19:57:58,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:58,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 19:57:58,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:57:58,263 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 11 states. [2020-10-27 19:57:58,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:57:58,694 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-27 19:57:58,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:57:58,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-27 19:57:58,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:57:58,696 INFO L225 Difference]: With dead ends: 43 [2020-10-27 19:57:58,696 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 19:57:58,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-27 19:57:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 19:57:58,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-27 19:57:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 19:57:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-27 19:57:58,703 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 30 [2020-10-27 19:57:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:57:58,704 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-27 19:57:58,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 19:57:58,704 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-27 19:57:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 19:57:58,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:58,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:57:58,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:57:58,706 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:58,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1940062156, now seen corresponding path program 1 times [2020-10-27 19:57:58,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:58,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837733091] [2020-10-27 19:57:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:58,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:58,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:58,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:58,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:59,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:59,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 19:57:59,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:57:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-27 19:57:59,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:57:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:57:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 19:57:59,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:59,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:59,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:59,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:59,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:59,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:57:59,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:59,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:59,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:59,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:57:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:59,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:59,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:59,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:57:59,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:59,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 19:57:59,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:57:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:57:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 19:57:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:59,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 19:57:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:59,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:59,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:57:59,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:57:59,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:59,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:59,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 19:57:59,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:59,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:57:59,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837733091] [2020-10-27 19:57:59,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:57:59,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 19:57:59,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808725886] [2020-10-27 19:57:59,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:57:59,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:59,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:57:59,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:57:59,340 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 9 states. [2020-10-27 19:57:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:57:59,733 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2020-10-27 19:57:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:57:59,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-27 19:57:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:57:59,735 INFO L225 Difference]: With dead ends: 63 [2020-10-27 19:57:59,735 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 19:57:59,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-27 19:57:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 19:57:59,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2020-10-27 19:57:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 19:57:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-27 19:57:59,746 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 31 [2020-10-27 19:57:59,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:57:59,746 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-27 19:57:59,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 19:57:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-27 19:57:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 19:57:59,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:57:59,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:57:59,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:57:59,748 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:57:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:57:59,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1806048650, now seen corresponding path program 1 times [2020-10-27 19:57:59,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:57:59,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482463161] [2020-10-27 19:57:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:57:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:59,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:59,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 19:57:59,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:59,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 19:57:59,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:57:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:57:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 19:57:59,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:59,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:57:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:59,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:59,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:57:59,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:57:59,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:57:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:59,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:59,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:57:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:59,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:59,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:57:59,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:57:59,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:57:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:57:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 19:57:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:59,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 19:57:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:57:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:57:59,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:57:59,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:57:59,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:57:59,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:57:59,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:57:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:57:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 19:57:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:57:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:57:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:57:59,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482463161] [2020-10-27 19:57:59,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:57:59,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:57:59,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516135013] [2020-10-27 19:57:59,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:57:59,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:57:59,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:57:59,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:57:59,982 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-10-27 19:58:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:58:00,249 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2020-10-27 19:58:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:58:00,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-27 19:58:00,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:58:00,251 INFO L225 Difference]: With dead ends: 58 [2020-10-27 19:58:00,251 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 19:58:00,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:58:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 19:58:00,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-10-27 19:58:00,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 19:58:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-27 19:58:00,259 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 31 [2020-10-27 19:58:00,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:58:00,259 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-27 19:58:00,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:58:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-27 19:58:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 19:58:00,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:58:00,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:58:00,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:58:00,261 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:58:00,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:58:00,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1786908046, now seen corresponding path program 2 times [2020-10-27 19:58:00,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:58:00,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521588655] [2020-10-27 19:58:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:58:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:00,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:00,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:01,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:04,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:04,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 19:58:04,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 19:58:04,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4153 [2020-10-27 19:58:04,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:58:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 19:58:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:58:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:04,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:58:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:04,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:04,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:04,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:58:04,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:58:04,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:58:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:58:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:58:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:04,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:58:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:04,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:04,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:58:04,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:58:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 19:58:04,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:58:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:58:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 19:58:04,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:58:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:04,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:04,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:04,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:58:04,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:58:04,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:58:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:58:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:58:04,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:58:04,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521588655] [2020-10-27 19:58:04,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:58:04,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 19:58:04,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750797530] [2020-10-27 19:58:04,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 19:58:04,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:58:04,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 19:58:04,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:58:04,763 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 13 states. [2020-10-27 19:58:04,879 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-27 19:58:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:58:05,562 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-10-27 19:58:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 19:58:05,562 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-27 19:58:05,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:58:05,564 INFO L225 Difference]: With dead ends: 47 [2020-10-27 19:58:05,564 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 19:58:05,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-10-27 19:58:05,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 19:58:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-27 19:58:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 19:58:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-27 19:58:05,587 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 34 [2020-10-27 19:58:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:58:05,587 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-27 19:58:05,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 19:58:05,587 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-27 19:58:05,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 19:58:05,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:58:05,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:58:05,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:58:05,589 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:58:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:58:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1719261543, now seen corresponding path program 3 times [2020-10-27 19:58:05,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:58:05,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988312066] [2020-10-27 19:58:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:58:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:05,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:07,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:07,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 19:58:07,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 19:58:07,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-10-27 19:58:07,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:58:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:58:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:58:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:58:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:07,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:07,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:58:07,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:58:07,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:58:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:58:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:58:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:58:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:07,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:07,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:58:07,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:07,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 19:58:07,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:58:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:58:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:58:07,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:07,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:58:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:07,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:07,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:07,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:58:07,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:07,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:58:07,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:07,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:58:07,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 19:58:07,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:58:07,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:58:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:58:07,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988312066] [2020-10-27 19:58:07,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:58:07,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 19:58:07,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254151552] [2020-10-27 19:58:07,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 19:58:07,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:58:07,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 19:58:07,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 19:58:07,650 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 10 states. [2020-10-27 19:58:08,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:58:08,014 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-10-27 19:58:08,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:58:08,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-27 19:58:08,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:58:08,016 INFO L225 Difference]: With dead ends: 68 [2020-10-27 19:58:08,016 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 19:58:08,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-27 19:58:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 19:58:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2020-10-27 19:58:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 19:58:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-27 19:58:08,027 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 35 [2020-10-27 19:58:08,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:58:08,028 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-27 19:58:08,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 19:58:08,028 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-27 19:58:08,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 19:58:08,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:58:08,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:58:08,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:58:08,030 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:58:08,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:58:08,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1209788453, now seen corresponding path program 2 times [2020-10-27 19:58:08,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:58:08,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165987379] [2020-10-27 19:58:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:58:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:08,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:08,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:08,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:08,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 19:58:08,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:58:08,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-27 19:58:08,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:58:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:58:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:58:08,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:08,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:58:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:08,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:08,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:08,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:58:08,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:58:08,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:58:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:58:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:58:08,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:58:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:08,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:08,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:58:08,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 19:58:08,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:58:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:58:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:58:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:58:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:08,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:08,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:08,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:58:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:58:08,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:58:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 19:58:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:58:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:58:08,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165987379] [2020-10-27 19:58:08,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:58:08,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 19:58:08,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627453144] [2020-10-27 19:58:08,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:58:08,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:58:08,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:58:08,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:58:08,776 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 9 states. [2020-10-27 19:58:09,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:58:09,063 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-10-27 19:58:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:58:09,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-27 19:58:09,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:58:09,064 INFO L225 Difference]: With dead ends: 63 [2020-10-27 19:58:09,064 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 19:58:09,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:58:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 19:58:09,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2020-10-27 19:58:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 19:58:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-27 19:58:09,073 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 35 [2020-10-27 19:58:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:58:09,073 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-27 19:58:09,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 19:58:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-27 19:58:09,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-27 19:58:09,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:58:09,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:58:09,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:58:09,075 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:58:09,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:58:09,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1722747149, now seen corresponding path program 4 times [2020-10-27 19:58:09,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:58:09,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554189433] [2020-10-27 19:58:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:58:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:09,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:09,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:09,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:09,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:09,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:10,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:10,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:14,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:14,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 19:58:14,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 19:58:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 19:58:14,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 19:58:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 19:58:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:58:14,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:58:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:14,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:14,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:58:14,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:14,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:58:14,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:58:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:58:14,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:58:14,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:58:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:14,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:14,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 19:58:14,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:58:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 19:58:14,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:58:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:58:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:58:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:14,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 19:58:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:14,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:14,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:58:14,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:14,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 19:58:14,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:58:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:58:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 19:58:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:58:14,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554189433] [2020-10-27 19:58:14,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:58:14,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 19:58:14,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799306852] [2020-10-27 19:58:14,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 19:58:14,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:58:14,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 19:58:14,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-27 19:58:14,756 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 15 states. [2020-10-27 19:58:15,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:58:15,648 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-10-27 19:58:15,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 19:58:15,649 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-27 19:58:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:58:15,650 INFO L225 Difference]: With dead ends: 51 [2020-10-27 19:58:15,650 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 19:58:15,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2020-10-27 19:58:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 19:58:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-27 19:58:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 19:58:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-10-27 19:58:15,667 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 38 [2020-10-27 19:58:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:58:15,668 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-10-27 19:58:15,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 19:58:15,671 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-10-27 19:58:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 19:58:15,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:58:15,672 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:58:15,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:58:15,673 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:58:15,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:58:15,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1150577108, now seen corresponding path program 5 times [2020-10-27 19:58:15,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:58:15,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312082160] [2020-10-27 19:58:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:58:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:15,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:16,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:16,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 19:58:16,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:58:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-27 19:58:16,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:58:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:58:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 19:58:16,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:16,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:58:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:16,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:16,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:58:16,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:16,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:58:16,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:16,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:58:16,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:58:16,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:58:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:16,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:58:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:16,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:16,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 19:58:16,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:16,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 19:58:16,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:58:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:58:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:58:16,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 19:58:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:58:16,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:58:16,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:58:16,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:58:16,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:58:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:58:16,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:58:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:58:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 19:58:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:58:16,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:58:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 19:58:16,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312082160] [2020-10-27 19:58:16,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:58:16,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 19:58:16,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768008021] [2020-10-27 19:58:16,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 19:58:16,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:58:16,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 19:58:16,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:58:16,340 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 11 states. [2020-10-27 19:58:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:58:16,721 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2020-10-27 19:58:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 19:58:16,721 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-27 19:58:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:58:16,724 INFO L225 Difference]: With dead ends: 73 [2020-10-27 19:58:16,724 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 19:58:16,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-27 19:58:16,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 19:58:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-10-27 19:58:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 19:58:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-10-27 19:58:16,748 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 39 [2020-10-27 19:58:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:58:16,749 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-10-27 19:58:16,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 19:58:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-10-27 19:58:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 19:58:16,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:58:16,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:58:16,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:58:16,751 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:58:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:58:16,753 INFO L82 PathProgramCache]: Analyzing trace with hash 875817494, now seen corresponding path program 3 times [2020-10-27 19:58:16,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:58:16,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996280745] [2020-10-27 19:58:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:58:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:58:16,771 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:58:16,771 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:58:16,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 19:58:16,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:58:16 BoogieIcfgContainer [2020-10-27 19:58:16,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:58:16,802 INFO L168 Benchmark]: Toolchain (without parser) took 27393.05 ms. Allocated memory was 151.0 MB in the beginning and 317.7 MB in the end (delta: 166.7 MB). Free memory was 124.9 MB in the beginning and 187.0 MB in the end (delta: -62.2 MB). Peak memory consumption was 105.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:58:16,803 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 151.0 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:58:16,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.01 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 102.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:58:16,804 INFO L168 Benchmark]: Boogie Preprocessor took 121.58 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 99.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:58:16,805 INFO L168 Benchmark]: RCFGBuilder took 863.63 ms. Allocated memory is still 151.0 MB. Free memory was 99.3 MB in the beginning and 94.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:58:16,806 INFO L168 Benchmark]: TraceAbstraction took 25680.77 ms. Allocated memory was 151.0 MB in the beginning and 317.7 MB in the end (delta: 166.7 MB). Free memory was 93.6 MB in the beginning and 187.0 MB in the end (delta: -93.4 MB). Peak memory consumption was 73.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:58:16,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 151.0 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 713.01 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 102.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 121.58 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 99.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 863.63 ms. Allocated memory is still 151.0 MB. Free memory was 99.3 MB in the beginning and 94.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25680.77 ms. Allocated memory was 151.0 MB in the beginning and 317.7 MB in the end (delta: 166.7 MB). Free memory was 93.6 MB in the beginning and 187.0 MB in the end (delta: -93.4 MB). Peak memory consumption was 73.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L603] int len = 2; [L604] len < 32 && __VERIFIER_nondet_int() [L604] len < 32 && __VERIFIER_nondet_int() [L604] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L607] CALL, EXPR sll_create(len + 1) [L575] SLL head = ((void *)0); [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND FALSE !(len > 0) [L585] return head; [L607] RET, EXPR sll_create(len + 1) [L607] SLL s = sll_create(len + 1); [L608] CALL, EXPR sll_length(s) [L588] int len = 0; [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND FALSE !(\read(head)) [L593] return len; [L608] RET, EXPR sll_length(s) [L608] COND TRUE len != sll_length(s) [L613] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_length_check-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.5s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 328 SDtfs, 509 SDslu, 865 SDs, 0 SdLazy, 1768 SolverSat, 197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 66 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.8s InterpolantComputationTime, 391 NumberOfCodeBlocks, 391 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 341 ConstructedInterpolants, 0 QuantifiedInterpolants, 63992 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 21/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...