/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:23:54,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:23:54,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:23:54,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:23:54,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:23:54,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:23:54,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:23:54,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:23:54,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:23:54,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:23:54,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:23:54,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:23:54,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:23:54,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:23:54,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:23:54,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:23:54,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:23:54,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:23:54,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:23:54,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:23:54,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:23:54,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:23:54,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:23:54,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:23:54,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:23:54,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:23:54,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:23:54,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:23:54,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:23:54,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:23:54,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:23:54,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:23:54,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:23:54,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:23:54,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:23:54,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:23:54,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:23:54,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:23:54,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:23:54,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:23:54,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:23:54,276 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 [2020-10-29 09:23:54,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:23:54,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:23:54,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:23:54,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:23:54,354 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:23:54,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:23:54,355 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:23:54,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:23:54,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:23:54,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:23:54,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:23:54,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:23:54,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:23:54,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:23:54,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:23:54,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:23:54,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:23:54,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:23:54,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:23:54,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:23:54,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:23:54,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:23:54,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:23:54,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:23:54,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:23:54,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:23:54,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:23:54,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:23:54,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:23:54,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:23:54,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:23:54,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:23:54,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:23:54,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:23:54,838 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:23:54,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-2.i [2020-10-29 09:23:54,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a212fd6d1/23b3234a716e410c9b091d207384cc5c/FLAGa269bf3d9 [2020-10-29 09:23:55,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:23:55,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-2.i [2020-10-29 09:23:55,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a212fd6d1/23b3234a716e410c9b091d207384cc5c/FLAGa269bf3d9 [2020-10-29 09:23:55,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a212fd6d1/23b3234a716e410c9b091d207384cc5c [2020-10-29 09:23:56,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:23:56,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:23:56,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:23:56,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:23:56,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:23:56,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:23:56" (1/1) ... [2020-10-29 09:23:56,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f47f2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56, skipping insertion in model container [2020-10-29 09:23:56,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:23:56" (1/1) ... [2020-10-29 09:23:56,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:23:56,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:23:56,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:23:56,502 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:23:56,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:23:56,681 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:23:56,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56 WrapperNode [2020-10-29 09:23:56,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:23:56,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:23:56,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:23:56,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:23:56,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56" (1/1) ... [2020-10-29 09:23:56,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56" (1/1) ... [2020-10-29 09:23:56,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56" (1/1) ... [2020-10-29 09:23:56,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56" (1/1) ... [2020-10-29 09:23:56,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56" (1/1) ... [2020-10-29 09:23:56,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56" (1/1) ... [2020-10-29 09:23:56,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56" (1/1) ... [2020-10-29 09:23:56,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:23:56,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:23:56,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:23:56,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:23:56,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56" (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 [2020-10-29 09:23:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:23:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:23:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:23:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:23:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:23:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:23:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-29 09:23:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2020-10-29 09:23:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-29 09:23:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-29 09:23:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2020-10-29 09:23:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:23:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:23:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:23:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:23:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:23:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:23:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:23:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:23:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:23:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:23:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:23:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:23:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:23:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:23:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:23:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:23:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:23:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:23:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:23:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:23:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:23:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:23:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:23:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:23:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:23:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:23:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:23:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:23:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:23:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:23:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:23:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:23:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:23:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:23:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:23:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:23:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:23:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:23:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:23:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:23:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:23:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:23:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:23:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:23:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:23:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:23:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:23:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:23:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:23:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:23:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:23:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:23:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:23:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:23:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:23:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:23:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:23:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:23:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:23:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:23:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:23:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:23:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:23:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:23:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:23:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:23:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:23:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:23:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:23:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:23:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:23:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:23:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:23:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:23:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:23:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:23:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:23:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:23:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:23:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:23:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:23:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:23:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:23:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:23:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:23:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:23:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:23:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:23:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:23:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:23:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:23:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:23:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:23:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:23:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:23:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:23:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:23:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:23:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:23:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:23:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:23:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:23:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:23:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:23:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:23:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:23:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:23:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:23:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:23:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:23:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:23:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:23:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:23:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-29 09:23:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:23:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:23:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2020-10-29 09:23:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-29 09:23:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:23:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-29 09:23:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2020-10-29 09:23:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:23:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:23:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:23:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:23:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:23:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:23:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:23:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:23:57,232 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:23:57,617 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:23:57,618 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-29 09:23:57,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:23:57 BoogieIcfgContainer [2020-10-29 09:23:57,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:23:57,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:23:57,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:23:57,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:23:57,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:23:56" (1/3) ... [2020-10-29 09:23:57,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1589d5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:23:57, skipping insertion in model container [2020-10-29 09:23:57,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:23:56" (2/3) ... [2020-10-29 09:23:57,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1589d5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:23:57, skipping insertion in model container [2020-10-29 09:23:57,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:23:57" (3/3) ... [2020-10-29 09:23:57,641 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-2.i [2020-10-29 09:23:57,655 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:23:57,663 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:23:57,679 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:23:57,724 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:23:57,724 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:23:57,724 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:23:57,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:23:57,724 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:23:57,725 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:23:57,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:23:57,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:23:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-10-29 09:23:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:23:57,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:23:57,764 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] [2020-10-29 09:23:57,765 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:23:57,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:23:57,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1942018806, now seen corresponding path program 1 times [2020-10-29 09:23:57,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:23:57,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609918417] [2020-10-29 09:23:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:23:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:23:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:23:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:23:58,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:23:59,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:23:59,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:23:59,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:23:59,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1203 [2020-10-29 09:23:59,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:23:59,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:23:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:23:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:23:59,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:23:59,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 09:23:59,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:23:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:23:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:23:59,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:23:59,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:23:59,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:23:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:23:59,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:23:59,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:23:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:23:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:23:59,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:23:59,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:23:59,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:23:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:23:59,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:23:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:23:59,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:23:59,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:23:59,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:23:59,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 09:23:59,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:23:59,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:23:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:23:59,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:23:59,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:23:59,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-10-29 09:23:59,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:23:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:23:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:23:59,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:23:59,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:23:59,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:23:59,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:23:59,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:23:59,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:23:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:23:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:23:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:23:59,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:23:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:23:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:23:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:23:59,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:23:59,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:23:59,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:23:59,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:23:59,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:23:59,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:23:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:23:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:23:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:23:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:23:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:23:59,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609918417] [2020-10-29 09:23:59,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:23:59,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:23:59,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558309337] [2020-10-29 09:23:59,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:23:59,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:23:59,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:23:59,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:23:59,718 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 6 states. [2020-10-29 09:24:00,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:00,171 INFO L93 Difference]: Finished difference Result 172 states and 260 transitions. [2020-10-29 09:24:00,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:24:00,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-29 09:24:00,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:00,185 INFO L225 Difference]: With dead ends: 172 [2020-10-29 09:24:00,186 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 09:24:00,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:24:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 09:24:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2020-10-29 09:24:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 09:24:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2020-10-29 09:24:00,246 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 31 [2020-10-29 09:24:00,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:00,247 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2020-10-29 09:24:00,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:24:00,247 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2020-10-29 09:24:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:24:00,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:00,250 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:00,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:24:00,251 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:00,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:00,251 INFO L82 PathProgramCache]: Analyzing trace with hash 979547273, now seen corresponding path program 1 times [2020-10-29 09:24:00,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:00,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622969750] [2020-10-29 09:24:00,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:00,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:05,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:05,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 09:24:05,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:24:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 09:24:05,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:05,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:24:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:24:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:24:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:05,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:05,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:05,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:24:05,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:05,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:05,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:05,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:24:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:05,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:05,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:05,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:24:05,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:05,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 09:24:05,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:05,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:24:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:24:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:05,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:24:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:05,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:05,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:24:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:24:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:05,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:05,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:24:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:05,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:05,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:05,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:24:05,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:05,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:24:05,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622969750] [2020-10-29 09:24:05,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:05,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:24:05,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749140445] [2020-10-29 09:24:05,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:24:05,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:05,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:24:05,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:24:05,545 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand 7 states. [2020-10-29 09:24:05,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:05,882 INFO L93 Difference]: Finished difference Result 137 states and 176 transitions. [2020-10-29 09:24:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:24:05,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-29 09:24:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:05,884 INFO L225 Difference]: With dead ends: 137 [2020-10-29 09:24:05,885 INFO L226 Difference]: Without dead ends: 93 [2020-10-29 09:24:05,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:24:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-29 09:24:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-10-29 09:24:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 09:24:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-10-29 09:24:05,902 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 40 [2020-10-29 09:24:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:05,902 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-10-29 09:24:05,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:24:05,902 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-10-29 09:24:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:24:05,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:05,905 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:05,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:24:05,905 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:05,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1820346864, now seen corresponding path program 2 times [2020-10-29 09:24:05,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:05,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533154929] [2020-10-29 09:24:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:05,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:05,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:06,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:06,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:06,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:06,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:09,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:10,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:10,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 09:24:10,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:24:10,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:24:10,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:10,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:24:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 09:24:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:11,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:11,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:11,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:11,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:11,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:24:11,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:11,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:11,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:11,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 09:24:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:11,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:11,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:11,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:24:11,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:11,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 09:24:11,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:11,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:24:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:24:11,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:24:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:11,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:11,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:24:11,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:11,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:24:11,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:11,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:11,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:11,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:24:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:11,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:11,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:11,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:11,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:11,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:24:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:11,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:24:11,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533154929] [2020-10-29 09:24:11,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:11,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:24:11,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210163070] [2020-10-29 09:24:11,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:24:11,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:11,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:24:11,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:24:11,243 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 8 states. [2020-10-29 09:24:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:11,607 INFO L93 Difference]: Finished difference Result 150 states and 194 transitions. [2020-10-29 09:24:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:24:11,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-29 09:24:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:11,610 INFO L225 Difference]: With dead ends: 150 [2020-10-29 09:24:11,610 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 09:24:11,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:24:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 09:24:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2020-10-29 09:24:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 09:24:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2020-10-29 09:24:11,626 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 49 [2020-10-29 09:24:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:11,626 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2020-10-29 09:24:11,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:24:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2020-10-29 09:24:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 09:24:11,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:11,632 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:11,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:24:11,632 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:11,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:11,633 INFO L82 PathProgramCache]: Analyzing trace with hash -451415000, now seen corresponding path program 1 times [2020-10-29 09:24:11,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:11,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809525968] [2020-10-29 09:24:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:11,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:11,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:24:11,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 09:24:11,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:11,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:24:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:24:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:24:11,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:11,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:11,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:11,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:11,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:11,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:11,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:24:11,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:11,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:11,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:24:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:12,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:12,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:24:12,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 09:24:12,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:12,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:24:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:24:12,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:12,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:24:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:12,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:12,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:12,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:24:12,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:12,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:24:12,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:12,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:24:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:24:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:24:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:12,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:12,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:12,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:12,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:12,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:24:12,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:12,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:12,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:12,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:12,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:24:12,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:12,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 09:24:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:12,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:12,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:12,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:12,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:24:12,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:12,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:24:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:12,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:24:12,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809525968] [2020-10-29 09:24:12,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:24:12,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 09:24:12,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446534127] [2020-10-29 09:24:12,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:24:12,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:12,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:24:12,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:24:12,242 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand 11 states. [2020-10-29 09:24:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:12,821 INFO L93 Difference]: Finished difference Result 141 states and 186 transitions. [2020-10-29 09:24:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:24:12,821 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-29 09:24:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:12,823 INFO L225 Difference]: With dead ends: 141 [2020-10-29 09:24:12,824 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 09:24:12,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:24:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 09:24:12,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-29 09:24:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 09:24:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 133 transitions. [2020-10-29 09:24:12,851 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 133 transitions. Word has length 57 [2020-10-29 09:24:12,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:12,852 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 133 transitions. [2020-10-29 09:24:12,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:24:12,852 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 133 transitions. [2020-10-29 09:24:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:24:12,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:12,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:12,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:24:12,855 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:12,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:12,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1118884861, now seen corresponding path program 1 times [2020-10-29 09:24:12,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:12,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471389002] [2020-10-29 09:24:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:17,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:17,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:24:17,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:24:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:24:17,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:17,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:24:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:24:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 09:24:17,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:18,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:18,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:18,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:18,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:18,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:24:18,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:18,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:18,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:24:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:18,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:18,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:18,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:24:18,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:18,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-29 09:24:18,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:18,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:24:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:18,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:24:18,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:18,799 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 30 [2020-10-29 09:24:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:24:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:18,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:18,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:18,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:24:18,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:18,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 09:24:18,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:18,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:24:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:18,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:24:18,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:24:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:19,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:19,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:24:19,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:24:19,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:19,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:24:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:24:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:19,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 09:24:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:19,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:19,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:19,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:19,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:24:19,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:19,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:24:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:24:19,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:24:19,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471389002] [2020-10-29 09:24:19,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:24:19,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-29 09:24:19,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083600723] [2020-10-29 09:24:19,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:24:19,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:19,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:24:19,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:24:19,271 INFO L87 Difference]: Start difference. First operand 102 states and 133 transitions. Second operand 20 states. [2020-10-29 09:24:20,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:20,984 INFO L93 Difference]: Finished difference Result 254 states and 383 transitions. [2020-10-29 09:24:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:24:20,985 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2020-10-29 09:24:20,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:20,991 INFO L225 Difference]: With dead ends: 254 [2020-10-29 09:24:20,991 INFO L226 Difference]: Without dead ends: 220 [2020-10-29 09:24:20,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:24:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-29 09:24:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 133. [2020-10-29 09:24:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 09:24:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 183 transitions. [2020-10-29 09:24:21,061 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 183 transitions. Word has length 60 [2020-10-29 09:24:21,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:21,062 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 183 transitions. [2020-10-29 09:24:21,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:24:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 183 transitions. [2020-10-29 09:24:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 09:24:21,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:21,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:21,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:24:21,070 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:21,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:21,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1069348046, now seen corresponding path program 1 times [2020-10-29 09:24:21,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:21,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575750769] [2020-10-29 09:24:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:21,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:21,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:22,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:22,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 09:24:22,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:22,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-10-29 09:24:22,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:22,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:22,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:24:22,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:24:22,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 09:24:22,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:22,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:22,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:22,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:22,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:22,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:24:22,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:22,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:22,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:24:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:22,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:22,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:24:22,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:22,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 09:24:22,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:22,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:24:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:24:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:22,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:24:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:22,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:22,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:24:22,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:22,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 09:24:22,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:22,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:22,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:24:22,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:22,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:24:22,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:24:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:22,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:22,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:24:22,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:22,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 09:24:22,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:22,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:24:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:24:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:22,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 09:24:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:22,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:22,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:22,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:24:22,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:24:22,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:22,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 09:24:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 09:24:22,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575750769] [2020-10-29 09:24:22,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:22,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:24:22,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419647431] [2020-10-29 09:24:22,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:24:22,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:22,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:24:22,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:24:22,601 INFO L87 Difference]: Start difference. First operand 133 states and 183 transitions. Second operand 12 states. [2020-10-29 09:24:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:23,140 INFO L93 Difference]: Finished difference Result 219 states and 307 transitions. [2020-10-29 09:24:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:24:23,142 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-29 09:24:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:23,146 INFO L225 Difference]: With dead ends: 219 [2020-10-29 09:24:23,146 INFO L226 Difference]: Without dead ends: 153 [2020-10-29 09:24:23,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:24:23,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-29 09:24:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 136. [2020-10-29 09:24:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-29 09:24:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 187 transitions. [2020-10-29 09:24:23,195 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 187 transitions. Word has length 61 [2020-10-29 09:24:23,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:23,196 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 187 transitions. [2020-10-29 09:24:23,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:24:23,196 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 187 transitions. [2020-10-29 09:24:23,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:24:23,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:23,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:23,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:24:23,198 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:23,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:23,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1669849635, now seen corresponding path program 2 times [2020-10-29 09:24:23,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:23,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417213410] [2020-10-29 09:24:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:23,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:23,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:28,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 09:24:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:24:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 09:24:28,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:28,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 09:24:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:24:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 09:24:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:28,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:28,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:24:28,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:28,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:24:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:28,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:28,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:28,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:24:28,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:28,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-29 09:24:28,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:28,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:24:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:24:28,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:29,121 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-29 09:24:29,385 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-29 09:24:29,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:24:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:29,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:29,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:24:29,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:29,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 09:24:29,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:29,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:24:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:24:29,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:24:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:29,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:29,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:29,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:24:29,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:29,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 09:24:29,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:29,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:29,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:24:29,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:24:29,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:24:29,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:30,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:24:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:30,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:30,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:30,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:24:30,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:30,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:24:30,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:30,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:24:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:24:30,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417213410] [2020-10-29 09:24:30,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:30,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:24:30,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915122947] [2020-10-29 09:24:30,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:24:30,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:30,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:24:30,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:24:30,432 INFO L87 Difference]: Start difference. First operand 136 states and 187 transitions. Second operand 24 states. [2020-10-29 09:24:31,772 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-29 09:24:33,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:33,415 INFO L93 Difference]: Finished difference Result 329 states and 509 transitions. [2020-10-29 09:24:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:24:33,416 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 64 [2020-10-29 09:24:33,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:33,419 INFO L225 Difference]: With dead ends: 329 [2020-10-29 09:24:33,419 INFO L226 Difference]: Without dead ends: 271 [2020-10-29 09:24:33,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:24:33,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-29 09:24:33,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 178. [2020-10-29 09:24:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 09:24:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 253 transitions. [2020-10-29 09:24:33,457 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 253 transitions. Word has length 64 [2020-10-29 09:24:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:33,458 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 253 transitions. [2020-10-29 09:24:33,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:24:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 253 transitions. [2020-10-29 09:24:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:24:33,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:33,459 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:33,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:24:33,460 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:33,460 INFO L82 PathProgramCache]: Analyzing trace with hash -985951313, now seen corresponding path program 1 times [2020-10-29 09:24:33,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:33,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439524754] [2020-10-29 09:24:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:33,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:33,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:35,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 09:24:38,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-29 09:24:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 09:24:38,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:24:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 09:24:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:24:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:38,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:24:38,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:38,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:24:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:24:38,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 09:24:38,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:24:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:24:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:24:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:38,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:24:38,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 09:24:38,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:24:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:38,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:24:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:24:38,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:24:38,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:24:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:24:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-29 09:24:38,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439524754] [2020-10-29 09:24:38,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:24:38,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 09:24:38,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679090535] [2020-10-29 09:24:38,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:24:38,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:38,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:24:38,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:24:38,924 INFO L87 Difference]: Start difference. First operand 178 states and 253 transitions. Second operand 12 states. [2020-10-29 09:24:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:39,692 INFO L93 Difference]: Finished difference Result 315 states and 476 transitions. [2020-10-29 09:24:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:24:39,696 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-29 09:24:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:39,701 INFO L225 Difference]: With dead ends: 315 [2020-10-29 09:24:39,702 INFO L226 Difference]: Without dead ends: 266 [2020-10-29 09:24:39,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:24:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-29 09:24:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 194. [2020-10-29 09:24:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-29 09:24:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 271 transitions. [2020-10-29 09:24:39,757 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 271 transitions. Word has length 64 [2020-10-29 09:24:39,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:39,758 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 271 transitions. [2020-10-29 09:24:39,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:24:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 271 transitions. [2020-10-29 09:24:39,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 09:24:39,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:39,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:39,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:24:39,760 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:39,760 INFO L82 PathProgramCache]: Analyzing trace with hash 969386856, now seen corresponding path program 3 times [2020-10-29 09:24:39,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:39,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736282085] [2020-10-29 09:24:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:40,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:40,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 09:24:40,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:40,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-29 09:24:40,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:40,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:24:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:24:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:24:40,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:40,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:40,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:40,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:24:40,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:40,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:40,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:24:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:40,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:40,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:40,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:24:40,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:40,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 09:24:40,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:40,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:40,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:24:40,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:40,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:24:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:40,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:24:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:40,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:40,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:24:40,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 09:24:40,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:40,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:24:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:24:40,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:24:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:41,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:41,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:41,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:24:41,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:41,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 09:24:41,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:41,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:24:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:24:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:41,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 09:24:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:41,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:41,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:24:41,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:24:41,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:41,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 09:24:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 09:24:41,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736282085] [2020-10-29 09:24:41,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:41,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:24:41,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685396407] [2020-10-29 09:24:41,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:24:41,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:41,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:24:41,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:24:41,159 INFO L87 Difference]: Start difference. First operand 194 states and 271 transitions. Second operand 13 states. [2020-10-29 09:24:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:41,836 INFO L93 Difference]: Finished difference Result 265 states and 373 transitions. [2020-10-29 09:24:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:24:41,837 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-29 09:24:41,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:41,840 INFO L225 Difference]: With dead ends: 265 [2020-10-29 09:24:41,840 INFO L226 Difference]: Without dead ends: 179 [2020-10-29 09:24:41,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:24:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-29 09:24:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 159. [2020-10-29 09:24:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-29 09:24:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 222 transitions. [2020-10-29 09:24:41,870 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 222 transitions. Word has length 65 [2020-10-29 09:24:41,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:41,871 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 222 transitions. [2020-10-29 09:24:41,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:24:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 222 transitions. [2020-10-29 09:24:41,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 09:24:41,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:41,873 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:41,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:24:41,873 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:41,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:41,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1621067602, now seen corresponding path program 4 times [2020-10-29 09:24:41,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:41,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993704061] [2020-10-29 09:24:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:44,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:44,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 09:24:44,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2226 [2020-10-29 09:24:44,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:44,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:24:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 09:24:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:24:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:44,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:44,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:44,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:44,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:24:44,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:44,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:44,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:44,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:24:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:44,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:44,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:44,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:24:44,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-29 09:24:44,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:44,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:24:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:24:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:44,905 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-10-29 09:24:45,118 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-29 09:24:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:24:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:45,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:45,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:24:45,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-29 09:24:45,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:45,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:45,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:24:45,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:45,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:24:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:45,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:24:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:45,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:45,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:45,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:24:45,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:45,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 09:24:45,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:45,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:24:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:24:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:24:45,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:46,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 09:24:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:46,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:46,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:24:46,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:24:46,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:46,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:24:46,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:24:46,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993704061] [2020-10-29 09:24:46,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:46,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:24:46,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178323459] [2020-10-29 09:24:46,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:24:46,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:46,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:24:46,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:24:46,270 INFO L87 Difference]: Start difference. First operand 159 states and 222 transitions. Second operand 24 states. [2020-10-29 09:24:49,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:49,841 INFO L93 Difference]: Finished difference Result 390 states and 602 transitions. [2020-10-29 09:24:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 09:24:49,843 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 67 [2020-10-29 09:24:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:49,847 INFO L225 Difference]: With dead ends: 390 [2020-10-29 09:24:49,847 INFO L226 Difference]: Without dead ends: 312 [2020-10-29 09:24:49,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 09:24:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-29 09:24:49,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 197. [2020-10-29 09:24:49,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 09:24:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 275 transitions. [2020-10-29 09:24:49,878 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 275 transitions. Word has length 67 [2020-10-29 09:24:49,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:49,879 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 275 transitions. [2020-10-29 09:24:49,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:24:49,879 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 275 transitions. [2020-10-29 09:24:49,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 09:24:49,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:49,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:49,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:24:49,881 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:49,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:49,881 INFO L82 PathProgramCache]: Analyzing trace with hash 2030167613, now seen corresponding path program 5 times [2020-10-29 09:24:49,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:49,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777194838] [2020-10-29 09:24:49,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:50,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:51,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:51,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:24:51,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2082 [2020-10-29 09:24:51,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:51,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:24:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 09:24:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:24:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:52,288 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-29 09:24:52,490 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2020-10-29 09:24:52,679 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2020-10-29 09:24:52,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:52,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:52,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:52,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:52,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:24:52,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:52,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:52,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:52,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:52,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:52,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:24:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:53,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:53,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:24:53,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:53,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 09:24:53,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:53,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:24:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:24:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:55,099 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 195 DAG size of output: 120 [2020-10-29 09:24:57,673 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 320 DAG size of output: 113 [2020-10-29 09:24:58,131 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 48 [2020-10-29 09:24:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:24:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:58,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:58,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:58,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:24:58,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 09:24:58,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:58,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:24:58,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:58,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:24:58,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:58,808 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2020-10-29 09:24:59,140 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-10-29 09:24:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:24:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:59,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:59,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:24:59,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 09:24:59,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:59,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:24:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:24:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:24:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:59,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 09:24:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:59,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:59,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:24:59,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:24:59,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:59,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:24:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:24:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:25:00,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777194838] [2020-10-29 09:25:00,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:25:00,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 09:25:00,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865297452] [2020-10-29 09:25:00,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 09:25:00,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:25:00,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 09:25:00,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:25:00,202 INFO L87 Difference]: Start difference. First operand 197 states and 275 transitions. Second operand 25 states. [2020-10-29 09:25:02,533 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 147 [2020-10-29 09:25:03,277 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 09:25:04,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:25:04,400 INFO L93 Difference]: Finished difference Result 358 states and 539 transitions. [2020-10-29 09:25:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:25:04,404 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 68 [2020-10-29 09:25:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:25:04,406 INFO L225 Difference]: With dead ends: 358 [2020-10-29 09:25:04,407 INFO L226 Difference]: Without dead ends: 280 [2020-10-29 09:25:04,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=121, Invalid=1211, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:25:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-29 09:25:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 201. [2020-10-29 09:25:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 09:25:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 287 transitions. [2020-10-29 09:25:04,438 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 287 transitions. Word has length 68 [2020-10-29 09:25:04,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:25:04,438 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 287 transitions. [2020-10-29 09:25:04,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 09:25:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 287 transitions. [2020-10-29 09:25:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 09:25:04,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:04,440 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:25:04,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:25:04,440 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:04,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:04,441 INFO L82 PathProgramCache]: Analyzing trace with hash 478568076, now seen corresponding path program 1 times [2020-10-29 09:25:04,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:04,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645414904] [2020-10-29 09:25:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:04,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:05,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:05,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:06,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:06,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:08,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:09,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:09,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:09,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 09:25:09,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 09:25:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5183 [2020-10-29 09:25:09,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:09,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:25:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:25:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 09:25:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:25:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:09,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:09,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:09,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:25:09,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:25:09,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:09,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:09,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:25:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:09,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:11,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:11,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 09:25:11,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:25:11,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-29 09:25:11,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:11,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:11,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:25:11,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:11,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:25:11,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:13,524 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2020-10-29 09:25:13,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:14,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:15,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:15,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:25:15,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:15,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1769 [2020-10-29 09:25:15,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:15,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:25:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:25:15,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0