/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-simple/dll2c_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:25:16,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:25:16,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:25:16,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:25:16,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:25:16,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:25:16,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:25:16,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:25:16,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:25:16,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:25:16,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:25:16,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:25:16,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:25:16,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:25:16,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:25:16,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:25:16,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:25:16,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:25:16,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:25:16,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:25:16,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:25:16,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:25:16,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:25:16,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:25:16,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:25:16,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:25:16,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:25:16,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:25:16,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:25:16,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:25:16,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:25:16,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:25:16,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:25:16,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:25:16,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:25:16,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:25:16,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:25:16,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:25:16,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:25:16,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:25:16,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:25:16,921 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 09:25:16,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:25:16,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:25:16,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:25:16,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:25:16,980 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:25:16,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:25:16,980 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:25:16,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:25:16,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:25:16,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:25:16,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:25:16,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:25:16,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:25:16,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:25:16,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:25:16,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:25:16,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:25:16,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:25:16,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:25:16,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:25:16,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:25:16,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:25:16,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:25:16,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:25:16,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:25:16,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:25:16,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:25:16,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:25:16,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:25:16,986 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:25:17,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:25:17,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:25:17,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:25:17,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:25:17,514 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:25:17,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_insert_unequal.i [2020-10-29 09:25:17,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b37e8d60/a4b5f320a1cf4f2c9c1a5fddc152829a/FLAGd60fcbe86 [2020-10-29 09:25:18,340 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:25:18,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_insert_unequal.i [2020-10-29 09:25:18,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b37e8d60/a4b5f320a1cf4f2c9c1a5fddc152829a/FLAGd60fcbe86 [2020-10-29 09:25:18,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b37e8d60/a4b5f320a1cf4f2c9c1a5fddc152829a [2020-10-29 09:25:18,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:25:18,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:25:18,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:25:18,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:25:18,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:25:18,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:25:18" (1/1) ... [2020-10-29 09:25:18,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0425c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:18, skipping insertion in model container [2020-10-29 09:25:18,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:25:18" (1/1) ... [2020-10-29 09:25:18,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:25:18,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:25:19,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:25:19,095 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:25:19,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:25:19,255 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:25:19,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:19 WrapperNode [2020-10-29 09:25:19,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:25:19,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:25:19,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:25:19,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:25:19,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:19" (1/1) ... [2020-10-29 09:25:19,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:19" (1/1) ... [2020-10-29 09:25:19,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:19" (1/1) ... [2020-10-29 09:25:19,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:19" (1/1) ... [2020-10-29 09:25:19,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:19" (1/1) ... [2020-10-29 09:25:19,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:19" (1/1) ... [2020-10-29 09:25:19,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:19" (1/1) ... [2020-10-29 09:25:19,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:25:19,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:25:19,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:25:19,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:25:19,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:19" (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 09:25:19,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:25:19,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:25:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:25:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:25:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:25:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:25:19,565 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:25:19,565 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-29 09:25:19,565 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-29 09:25:19,566 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_insert [2020-10-29 09:25:19,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:25:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:25:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:25:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:25:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:25:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:25:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:25:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:25:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:25:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:25:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:25:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:25:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:25:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:25:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:25:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:25:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:25:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:25:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:25:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:25:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:25:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:25:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:25:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:25:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:25:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:25:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:25:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:25:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:25:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:25:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:25:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:25:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:25:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:25:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:25:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:25:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:25:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:25:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:25:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:25:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:25:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:25:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:25:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:25:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:25:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:25:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:25:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:25:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:25:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:25:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:25:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:25:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:25:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:25:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:25:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:25:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:25:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:25:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:25:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:25:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:25:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:25:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:25:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:25:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:25:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:25:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:25:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:25:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:25:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:25:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:25:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:25:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:25:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:25:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:25:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:25:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:25:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:25:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:25:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:25:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:25:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:25:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:25:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:25:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:25:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:25:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:25:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:25:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:25:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:25:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:25:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:25:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:25:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:25:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:25:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:25:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:25:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:25:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:25:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:25:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:25:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:25:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:25:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:25:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:25:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:25:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:25:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:25:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:25:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:25:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:25:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:25:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:25:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:25:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:25:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:25:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-29 09:25:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-29 09:25:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:25:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:25:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_insert [2020-10-29 09:25:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:25:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:25:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:25:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:25:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:25:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:25:20,308 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:25:20,665 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:25:20,666 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-29 09:25:20,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:25:20 BoogieIcfgContainer [2020-10-29 09:25:20,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:25:20,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:25:20,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:25:20,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:25:20,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:25:18" (1/3) ... [2020-10-29 09:25:20,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffaea30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:25:20, skipping insertion in model container [2020-10-29 09:25:20,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:19" (2/3) ... [2020-10-29 09:25:20,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffaea30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:25:20, skipping insertion in model container [2020-10-29 09:25:20,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:25:20" (3/3) ... [2020-10-29 09:25:20,677 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2020-10-29 09:25:20,690 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:25:20,696 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:25:20,710 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:25:20,742 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:25:20,742 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:25:20,743 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:25:20,743 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:25:20,743 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:25:20,743 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:25:20,743 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:25:20,743 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:25:20,762 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-29 09:25:20,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:25:20,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:20,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:25:20,772 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:20,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:20,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1029025017, now seen corresponding path program 1 times [2020-10-29 09:25:20,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:20,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150772015] [2020-10-29 09:25:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:21,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:21,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:21,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:23,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:25:23,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:25:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2794 [2020-10-29 09:25:23,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:23,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:25:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:25:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:25:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:25:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:25:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:24,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:24,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:24,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:25:24,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:24,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:25:24,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:24,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:24,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:24,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:24,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:24,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:24,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:25:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:24,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:24,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:24,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:25:24,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:25:24,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 09:25:24,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:24,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:25:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:25:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:24,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:24,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:24,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:24,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:24,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:24,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:25:24,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:24,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:24,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:24,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:24,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:24,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:24,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:25:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:24,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:24,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:25:24,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:25:24,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 09:25:24,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:24,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:24,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:25:24,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:25:24,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:25:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:24,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:24,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:24,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:24,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:24,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:25:24,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:24,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:25:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:25:24,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:25:24,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150772015] [2020-10-29 09:25:24,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:25:24,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 09:25:24,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172940765] [2020-10-29 09:25:24,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:25:24,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:25:24,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:25:24,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:25:24,702 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 8 states. [2020-10-29 09:25:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:25:25,564 INFO L93 Difference]: Finished difference Result 128 states and 174 transitions. [2020-10-29 09:25:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:25:25,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-29 09:25:25,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:25:25,576 INFO L225 Difference]: With dead ends: 128 [2020-10-29 09:25:25,576 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 09:25:25,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:25:25,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 09:25:25,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-29 09:25:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 09:25:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-29 09:25:25,647 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 39 [2020-10-29 09:25:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:25:25,649 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-29 09:25:25,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:25:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-29 09:25:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:25:25,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:25,652 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:25:25,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:25:25,653 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:25,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:25,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1978078613, now seen corresponding path program 1 times [2020-10-29 09:25:25,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:25,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178615887] [2020-10-29 09:25:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:27,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:28,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 09:25:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:25:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2777 [2020-10-29 09:25:28,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:28,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:25:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:25:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:25:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:25:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:28,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:28,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:28,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:25:28,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:28,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:25:28,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:28,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:28,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:25:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:28,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:28,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:25:28,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:28,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 09:25:28,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:28,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:28,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:25:28,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:28,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:25:28,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:28,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:28,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:28,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:28,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:28,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:25:28,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:28,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:25:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:25:28,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:28,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:25:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:28,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:28,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:25:28,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:28,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 09:25:28,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:28,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:25:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:25:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:25:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:28,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:28,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:28,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:28,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:25:28,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:28,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:25:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:25:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:25:28,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178615887] [2020-10-29 09:25:28,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:25:28,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:25:28,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919245272] [2020-10-29 09:25:28,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:25:28,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:25:28,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:25:28,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:25:28,848 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 10 states. [2020-10-29 09:25:29,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:25:29,476 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2020-10-29 09:25:29,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:25:29,480 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-29 09:25:29,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:25:29,484 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:25:29,484 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 09:25:29,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:25:29,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 09:25:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-29 09:25:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 09:25:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-10-29 09:25:29,509 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 40 [2020-10-29 09:25:29,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:25:29,512 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-10-29 09:25:29,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:25:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-10-29 09:25:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:25:29,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:29,514 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:25:29,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:25:29,515 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:29,518 INFO L82 PathProgramCache]: Analyzing trace with hash -783757729, now seen corresponding path program 1 times [2020-10-29 09:25:29,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:29,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226660812] [2020-10-29 09:25:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:32,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:32,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 09:25:32,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:32,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3367 [2020-10-29 09:25:32,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:32,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:32,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 09:25:32,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:25:32,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 09:25:32,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:33,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:25:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:33,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:33,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:33,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:25:33,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:25:33,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:33,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:33,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:25:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:33,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:33,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:25:33,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:33,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-29 09:25:33,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:33,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:25:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:25:33,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:34,276 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-29 09:25:34,575 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-10-29 09:25:34,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:34,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:34,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:34,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:34,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:34,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:25:34,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:34,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:25:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:25:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:25:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:34,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:34,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:34,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:34,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 09:25:34,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:34,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:25:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:34,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:25:34,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:34,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:25:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:34,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:35,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:35,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:25:35,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:35,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-29 09:25:35,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:35,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:35,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:25:35,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:35,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:25:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:36,123 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-29 09:25:36,838 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-10-29 09:25:38,258 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 132 DAG size of output: 109 [2020-10-29 09:25:38,576 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-29 09:25:38,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:38,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:38,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:38,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:38,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:38,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 09:25:38,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:38,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:38,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:25:38,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:38,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:25:38,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:39,433 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2020-10-29 09:25:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:25:39,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226660812] [2020-10-29 09:25:39,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:25:39,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 09:25:39,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441222425] [2020-10-29 09:25:39,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 09:25:39,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:25:39,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 09:25:39,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:25:39,514 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 29 states. [2020-10-29 09:25:40,580 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-29 09:25:40,834 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 09:25:41,062 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 09:25:41,777 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-10-29 09:25:42,139 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-29 09:25:46,129 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 154 DAG size of output: 141 [2020-10-29 09:25:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:25:48,858 INFO L93 Difference]: Finished difference Result 87 states and 112 transitions. [2020-10-29 09:25:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:25:48,859 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 50 [2020-10-29 09:25:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:25:48,863 INFO L225 Difference]: With dead ends: 87 [2020-10-29 09:25:48,864 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 09:25:48,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=171, Invalid=1991, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 09:25:48,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 09:25:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 69. [2020-10-29 09:25:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:25:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2020-10-29 09:25:48,912 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 50 [2020-10-29 09:25:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:25:48,913 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2020-10-29 09:25:48,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 09:25:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2020-10-29 09:25:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 09:25:48,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:48,917 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:25:48,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:25:48,918 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:48,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:48,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1955198405, now seen corresponding path program 2 times [2020-10-29 09:25:48,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:48,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525400158] [2020-10-29 09:25:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:49,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:50,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:50,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 09:25:50,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:25:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1626 [2020-10-29 09:25:50,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:50,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:25:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:25:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 09:25:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:25:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:50,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:50,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:25:50,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:25:50,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:50,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:50,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:50,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:25:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:50,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:50,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:50,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:25:50,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:25:50,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 09:25:50,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:50,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:25:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:25:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:50,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:25:50,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:50,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:25:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:25:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:50,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:50,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:50,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:50,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:25:50,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:50,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:50,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:50,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:25:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:50,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:51,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:51,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:25:51,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 09:25:51,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:51,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:25:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:25:51,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:25:51,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:51,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:51,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:51,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:51,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:51,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:25:51,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:51,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:25:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:25:51,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 09:25:51,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525400158] [2020-10-29 09:25:51,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:25:51,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:25:51,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925740511] [2020-10-29 09:25:51,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:25:51,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:25:51,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:25:51,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:25:51,076 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand 9 states. [2020-10-29 09:25:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:25:51,524 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2020-10-29 09:25:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:25:51,525 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-29 09:25:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:25:51,530 INFO L225 Difference]: With dead ends: 89 [2020-10-29 09:25:51,530 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 09:25:51,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:25:51,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 09:25:51,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-29 09:25:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:25:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2020-10-29 09:25:51,558 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 51 [2020-10-29 09:25:51,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:25:51,559 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2020-10-29 09:25:51,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:25:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2020-10-29 09:25:51,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:25:51,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:51,563 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:25:51,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:25:51,564 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:51,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:51,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1867688965, now seen corresponding path program 1 times [2020-10-29 09:25:51,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:51,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312949307] [2020-10-29 09:25:51,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:51,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:51,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:54,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:54,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:25:54,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:25:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3009 [2020-10-29 09:25:54,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:54,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:25:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:25:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 09:25:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:25:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:54,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:54,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:54,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:25:54,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:54,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:25:54,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:54,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:54,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:25:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:54,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:54,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:54,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:54,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:25:54,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:25:54,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 09:25:54,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:54,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:25:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:25:54,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:55,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:55,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:55,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:55,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:25:55,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:55,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:55,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:55,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:55,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:55,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:25:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:55,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:55,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:55,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:55,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:25:55,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:25:55,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:55,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:25:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:25:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:55,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:25:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:55,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:55,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:25:55,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:25:55,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 09:25:55,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:55,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:25:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:25:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:55,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:55,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:55,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:55,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:55,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 09:25:55,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:55,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:55,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:25:55,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:55,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:25:55,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:25:55,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312949307] [2020-10-29 09:25:55,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:25:55,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:25:55,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532783133] [2020-10-29 09:25:55,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:25:55,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:25:55,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:25:55,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:25:55,854 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand 20 states. [2020-10-29 09:25:57,094 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-29 09:25:57,331 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-29 09:25:57,644 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-29 09:25:58,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:25:58,058 INFO L93 Difference]: Finished difference Result 111 states and 135 transitions. [2020-10-29 09:25:58,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:25:58,058 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-10-29 09:25:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:25:58,060 INFO L225 Difference]: With dead ends: 111 [2020-10-29 09:25:58,061 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 09:25:58,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:25:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 09:25:58,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 09:25:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 09:25:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-10-29 09:25:58,075 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 52 [2020-10-29 09:25:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:25:58,075 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-10-29 09:25:58,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:25:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-10-29 09:25:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:25:58,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:58,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:25:58,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:25:58,079 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:58,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:58,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1584340041, now seen corresponding path program 1 times [2020-10-29 09:25:58,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:58,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939702889] [2020-10-29 09:25:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:58,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:01,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:01,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:26:01,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3747 [2020-10-29 09:26:01,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:01,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 09:26:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 09:26:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:26:02,108 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-10-29 09:26:02,225 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-10-29 09:26:02,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:02,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:02,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:02,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:26:02,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:02,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:02,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:02,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:02,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:02,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-29 09:26:02,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:02,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:26:02,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:26:02,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:03,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:03,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:03,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:03,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:03,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:26:03,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:03,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:26:03,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:03,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:03,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:03,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:03,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:03,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:26:03,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:03,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:03,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:26:03,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:26:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:03,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:26:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:03,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:03,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:03,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:26:03,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:03,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-29 09:26:03,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:03,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:03,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:26:03,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:03,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:26:03,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:05,256 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-10-29 09:26:05,637 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-29 09:26:10,757 WARN L193 SmtUtils]: Spent 4.59 s on a formula simplification. DAG size of input: 186 DAG size of output: 149 [2020-10-29 09:26:12,614 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 221 DAG size of output: 105 [2020-10-29 09:26:13,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:13,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:13,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:13,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:13,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 09:26:13,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:13,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:13,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:26:13,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:13,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:26:13,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:13,775 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-29 09:26:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:26:13,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939702889] [2020-10-29 09:26:13,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:26:13,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 09:26:13,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888868657] [2020-10-29 09:26:13,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 09:26:13,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:13,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 09:26:13,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=749, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:26:13,818 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 29 states. [2020-10-29 09:26:14,536 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-29 09:26:17,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:17,729 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2020-10-29 09:26:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:26:17,731 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2020-10-29 09:26:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:17,733 INFO L225 Difference]: With dead ends: 87 [2020-10-29 09:26:17,733 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 09:26:17,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=124, Invalid=1436, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 09:26:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 09:26:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2020-10-29 09:26:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:26:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2020-10-29 09:26:17,752 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 54 [2020-10-29 09:26:17,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:17,752 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2020-10-29 09:26:17,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 09:26:17,753 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2020-10-29 09:26:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:26:17,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:17,757 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:26:17,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:26:17,758 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:17,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1542334731, now seen corresponding path program 1 times [2020-10-29 09:26:17,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:17,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158677920] [2020-10-29 09:26:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:17,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:18,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:18,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:26:22,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:26:22,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4297 [2020-10-29 09:26:22,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:26:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 09:26:22,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:22,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:26:22,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:22,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 09:26:22,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:26:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:26:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:22,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:22,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:26:22,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:22,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:22,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:26:22,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:26:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:26:22,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 09:26:22,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:26:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:26:22,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:22,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:22,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:26:22,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:22,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:22,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:22,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 09:26:22,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158677920] [2020-10-29 09:26:22,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:26:22,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 09:26:22,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297878431] [2020-10-29 09:26:22,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:26:22,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:22,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:26:22,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:26:22,534 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand 8 states. [2020-10-29 09:26:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:22,882 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2020-10-29 09:26:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:26:22,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-29 09:26:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:22,884 INFO L225 Difference]: With dead ends: 84 [2020-10-29 09:26:22,885 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 09:26:22,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:26:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 09:26:22,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-29 09:26:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:26:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2020-10-29 09:26:22,915 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 54 [2020-10-29 09:26:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:22,915 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2020-10-29 09:26:22,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:26:22,916 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2020-10-29 09:26:22,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:26:22,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:22,919 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:22,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:26:22,919 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash -567062189, now seen corresponding path program 3 times [2020-10-29 09:26:22,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:22,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861475882] [2020-10-29 09:26:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:26,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:26,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 09:26:26,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:26,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4021 [2020-10-29 09:26:26,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:26,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 09:26:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 09:26:26,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:27,169 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-10-29 09:26:27,298 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-29 09:26:27,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:27,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:27,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:27,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:27,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:26:27,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:27,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:27,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:27,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:28,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:28,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:26:28,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:28,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-29 09:26:28,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:28,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:26:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:26:28,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:28,799 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-29 09:26:29,089 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-10-29 09:26:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:29,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:29,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:29,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:29,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:29,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:26:29,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:29,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:29,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:26:29,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:29,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:26:29,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:29,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:29,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:29,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:29,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:26:29,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:29,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:26:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:26:29,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:26:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:29,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:29,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:29,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:29,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:29,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:26:29,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:29,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:26:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:26:29,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:26:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:29,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:29,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:26:29,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:29,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 09:26:29,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:29,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:26:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:26:29,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:30,787 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-29 09:26:31,267 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2020-10-29 09:26:34,516 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 161 DAG size of output: 135 [2020-10-29 09:26:38,657 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 359 DAG size of output: 134 [2020-10-29 09:26:38,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:38,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:38,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:38,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 09:26:38,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:38,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:26:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:26:38,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:39,263 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-10-29 09:26:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:26:39,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861475882] [2020-10-29 09:26:39,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:26:39,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 09:26:39,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120489161] [2020-10-29 09:26:39,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 09:26:39,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:39,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 09:26:39,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:26:39,312 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand 34 states. [2020-10-29 09:26:40,426 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 09:26:41,180 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-29 09:26:42,017 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-29 09:26:43,032 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-29 09:26:44,860 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-29 09:26:45,552 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-29 09:26:47,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:47,486 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2020-10-29 09:26:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 09:26:47,489 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 60 [2020-10-29 09:26:47,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:47,490 INFO L225 Difference]: With dead ends: 78 [2020-10-29 09:26:47,490 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 09:26:47,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=211, Invalid=2239, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 09:26:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 09:26:47,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2020-10-29 09:26:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:26:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-10-29 09:26:47,505 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 60 [2020-10-29 09:26:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:47,505 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-10-29 09:26:47,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 09:26:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-10-29 09:26:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 09:26:47,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:47,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:47,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:26:47,507 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:47,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:47,508 INFO L82 PathProgramCache]: Analyzing trace with hash 2136711858, now seen corresponding path program 1 times [2020-10-29 09:26:47,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:47,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651124035] [2020-10-29 09:26:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:52,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:52,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 09:26:52,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 09:26:52,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:52,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 09:26:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 09:26:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:53,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:53,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:53,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:53,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:53,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:26:53,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:53,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:53,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:53,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:53,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-29 09:26:53,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:53,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:26:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:53,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:26:53,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:53,954 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-29 09:26:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:54,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:54,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:54,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:54,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:26:54,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:54,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:26:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:26:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:54,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:54,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:54,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:54,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:54,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 09:26:54,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:54,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:26:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:26:54,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:54,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:26:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:55,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:55,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:26:55,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-29 09:26:55,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:55,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:55,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:26:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:26:55,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:56,662 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-10-29 09:26:57,251 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2020-10-29 09:27:02,011 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 185 DAG size of output: 155 [2020-10-29 09:27:04,710 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 166 DAG size of output: 147 [2020-10-29 09:27:04,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:04,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:04,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 09:27:04,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:04,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:27:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:05,485 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-10-29 09:27:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:27:05,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651124035] [2020-10-29 09:27:05,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:27:05,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 09:27:05,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213163332] [2020-10-29 09:27:05,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 09:27:05,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:05,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 09:27:05,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:27:05,530 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 31 states. [2020-10-29 09:27:07,562 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-29 09:27:07,917 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-29 09:27:08,382 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-10-29 09:27:12,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:12,172 INFO L93 Difference]: Finished difference Result 95 states and 109 transitions. [2020-10-29 09:27:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:27:12,173 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 56 [2020-10-29 09:27:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:12,175 INFO L225 Difference]: With dead ends: 95 [2020-10-29 09:27:12,175 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 09:27:12,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=144, Invalid=1926, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 09:27:12,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 09:27:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2020-10-29 09:27:12,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 09:27:12,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-10-29 09:27:12,193 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 56 [2020-10-29 09:27:12,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:12,193 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-10-29 09:27:12,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 09:27:12,194 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-10-29 09:27:12,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 09:27:12,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:12,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:27:12,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:27:12,195 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:12,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:12,196 INFO L82 PathProgramCache]: Analyzing trace with hash 2064325300, now seen corresponding path program 1 times [2020-10-29 09:27:12,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:12,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262520235] [2020-10-29 09:27:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:12,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:17,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:17,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 09:27:17,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:27:17,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 09:27:17,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:17,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 09:27:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 09:27:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:17,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:17,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:17,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:17,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:17,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:27:17,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:17,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:17,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:17,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:17,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:17,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:17,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:27:17,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:27:17,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-29 09:27:17,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:17,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:27:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:27:17,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:18,477 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-29 09:27:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:18,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:18,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:18,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:18,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:27:18,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:18,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:18,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:27:18,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:18,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:27:18,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:27:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:18,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:18,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:18,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 09:27:18,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:18,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:27:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:19,174 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-29 09:27:19,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:27:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:19,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:19,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:19,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:27:19,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:19,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 09:27:19,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:19,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:27:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:27:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:20,000 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2020-10-29 09:27:20,653 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2020-10-29 09:27:21,694 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2020-10-29 09:27:22,152 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2020-10-29 09:27:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:22,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:22,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:22,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:22,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 09:27:22,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:22,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:27:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:22,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:23,093 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-10-29 09:27:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:27:23,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262520235] [2020-10-29 09:27:23,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:27:23,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 09:27:23,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345128088] [2020-10-29 09:27:23,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 09:27:23,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:23,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 09:27:23,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=809, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:27:23,133 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 30 states. [2020-10-29 09:27:24,333 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-29 09:27:25,242 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-29 09:27:25,655 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-10-29 09:27:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:27,685 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2020-10-29 09:27:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:27:27,686 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2020-10-29 09:27:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:27,688 INFO L225 Difference]: With dead ends: 97 [2020-10-29 09:27:27,688 INFO L226 Difference]: Without dead ends: 93 [2020-10-29 09:27:27,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=138, Invalid=1754, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:27:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-29 09:27:27,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 69. [2020-10-29 09:27:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:27:27,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-29 09:27:27,702 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 56 [2020-10-29 09:27:27,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:27,703 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-29 09:27:27,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 09:27:27,703 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-29 09:27:27,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 09:27:27,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:27,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:27:27,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:27:27,704 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:27,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:27,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1525392300, now seen corresponding path program 1 times [2020-10-29 09:27:27,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:27,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144971923] [2020-10-29 09:27:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:32,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:32,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 09:27:32,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:27:32,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 09:27:32,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:32,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:27:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 09:27:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:32,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:32,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:32,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:32,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:27:32,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:32,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:32,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:32,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:32,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:32,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:32,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:32,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:33,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:33,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:27:33,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:33,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 09:27:33,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:33,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:27:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:27:33,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:33,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:33,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:33,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:33,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:33,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:27:33,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:33,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:33,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:27:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:33,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:33,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:33,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:27:33,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:33,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:33,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:27:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:33,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:33,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:27:33,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:27:33,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:33,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:27:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:27:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:33,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:33,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:33,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:27:33,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:33,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:33,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 09:27:33,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144971923] [2020-10-29 09:27:33,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:27:33,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:27:33,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426559991] [2020-10-29 09:27:33,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:27:33,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:33,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:27:33,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:27:33,088 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 9 states. [2020-10-29 09:27:33,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:33,471 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-10-29 09:27:33,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:27:33,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-29 09:27:33,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:33,478 INFO L225 Difference]: With dead ends: 83 [2020-10-29 09:27:33,478 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 09:27:33,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:27:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 09:27:33,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2020-10-29 09:27:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 09:27:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2020-10-29 09:27:33,492 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 59 [2020-10-29 09:27:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:33,492 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2020-10-29 09:27:33,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:27:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2020-10-29 09:27:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:27:33,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:33,494 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:27:33,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:27:33,494 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:33,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:33,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1591266475, now seen corresponding path program 2 times [2020-10-29 09:27:33,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:33,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817507087] [2020-10-29 09:27:33,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:33,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:38,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:38,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:27:38,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 09:27:38,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:38,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 09:27:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 09:27:38,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:38,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:38,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:38,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:27:38,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:38,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:38,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:39,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:39,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:27:39,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:39,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 09:27:39,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:39,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:27:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:27:39,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:40,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:40,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:27:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:40,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:27:40,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:27:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:40,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:40,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:40,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:40,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:27:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:40,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:27:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:27:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:27:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:27:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:40,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:40,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:40,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:40,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 09:27:40,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:40,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:40,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:27:40,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:40,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:27:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:27:40,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:27:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:40,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:40,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:40,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:27:40,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:40,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-29 09:27:40,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:40,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:27:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:40,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:27:40,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:41,023 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-29 09:27:41,268 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-29 09:27:42,008 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2020-10-29 09:27:42,376 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-29 09:27:42,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:42,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:42,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:42,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:42,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:42,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 09:27:42,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:42,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:27:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:42,808 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-29 09:27:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:27:42,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817507087] [2020-10-29 09:27:42,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:27:42,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 09:27:42,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361288662] [2020-10-29 09:27:42,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 09:27:42,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:42,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 09:27:42,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:27:42,837 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 30 states. [2020-10-29 09:27:43,469 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-29 09:27:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:45,964 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2020-10-29 09:27:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:27:45,965 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 64 [2020-10-29 09:27:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:45,967 INFO L225 Difference]: With dead ends: 87 [2020-10-29 09:27:45,967 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 09:27:45,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=146, Invalid=1576, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:27:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 09:27:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2020-10-29 09:27:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 09:27:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2020-10-29 09:27:45,990 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 64 [2020-10-29 09:27:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:45,991 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2020-10-29 09:27:45,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 09:27:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2020-10-29 09:27:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 09:27:45,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:45,992 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-10-29 09:27:45,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:27:45,992 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:45,993 INFO L82 PathProgramCache]: Analyzing trace with hash -4398200, now seen corresponding path program 1 times [2020-10-29 09:27:45,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:45,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038000411] [2020-10-29 09:27:45,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:51,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:51,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 09:27:51,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:27:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:27:51,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:51,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 09:27:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 09:27:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:51,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:51,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:51,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:51,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:27:51,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:51,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:51,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:51,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:51,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:51,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:27:51,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:51,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 09:27:51,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:51,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:27:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:27:51,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:52,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:52,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:52,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:52,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:52,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:27:52,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:52,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:27:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:27:52,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:52,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:27:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:52,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:52,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:52,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:52,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:27:52,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:52,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:27:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:27:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:52,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:27:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:53,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:53,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:27:53,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 09:27:53,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:53,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:27:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:27:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:27:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:53,728 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-10-29 09:27:54,232 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-10-29 09:27:59,385 WARN L193 SmtUtils]: Spent 4.61 s on a formula simplification. DAG size of input: 198 DAG size of output: 135 [2020-10-29 09:28:02,594 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 205 DAG size of output: 149 [2020-10-29 09:28:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:02,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:02,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:02,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:02,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:02,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:28:02,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:02,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:28:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:02,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:28:03,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038000411] [2020-10-29 09:28:03,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:03,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 09:28:03,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141148299] [2020-10-29 09:28:03,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 09:28:03,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:03,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 09:28:03,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=865, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:28:03,052 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 31 states. [2020-10-29 09:28:03,957 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-29 09:28:04,804 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-29 09:28:05,315 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-29 09:28:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:08,433 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2020-10-29 09:28:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:28:08,434 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2020-10-29 09:28:08,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:08,436 INFO L225 Difference]: With dead ends: 86 [2020-10-29 09:28:08,436 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 09:28:08,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=140, Invalid=1752, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:28:08,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 09:28:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-29 09:28:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 09:28:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-29 09:28:08,450 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 60 [2020-10-29 09:28:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:08,450 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-29 09:28:08,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 09:28:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-29 09:28:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 09:28:08,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:08,451 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:28:08,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:28:08,451 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:08,452 INFO L82 PathProgramCache]: Analyzing trace with hash 172826278, now seen corresponding path program 2 times [2020-10-29 09:28:08,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:08,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980450598] [2020-10-29 09:28:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:08,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:13,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:13,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 09:28:13,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:13,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 09:28:13,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:13,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 09:28:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:13,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 09:28:13,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:13,685 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-10-29 09:28:13,875 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-29 09:28:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:14,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:14,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:14,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:14,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:28:14,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:14,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:14,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:15,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:15,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:28:15,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:15,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-29 09:28:15,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:15,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:15,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 09:28:15,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:15,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:28:15,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:15,447 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-10-29 09:28:15,639 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-29 09:28:16,120 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-10-29 09:28:16,505 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-29 09:28:16,776 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-29 09:28:17,193 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-10-29 09:28:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:17,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:17,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:17,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:17,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:17,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:28:17,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:17,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:28:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:28:17,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:17,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:28:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:17,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:17,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:17,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:28:17,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:17,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:28:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:17,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:28:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:17,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:17,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:17,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:17,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 09:28:17,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:17,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:17,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:28:17,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:17,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:18,373 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-29 09:28:18,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:28:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:18,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:18,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:18,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:28:18,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:18,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 09:28:18,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:18,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:28:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:28:18,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:19,819 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 09:28:20,805 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2020-10-29 09:28:30,821 WARN L193 SmtUtils]: Spent 9.16 s on a formula simplification. DAG size of input: 219 DAG size of output: 179 [2020-10-29 09:28:34,814 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 251 DAG size of output: 114 [2020-10-29 09:28:36,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:36,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:36,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:36,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:36,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:36,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:28:36,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:36,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:28:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:36,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:37,834 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-10-29 09:28:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:28:37,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980450598] [2020-10-29 09:28:37,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:37,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 09:28:37,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891379750] [2020-10-29 09:28:37,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 09:28:37,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:37,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 09:28:37,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1249, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:28:37,892 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 37 states. [2020-10-29 09:28:39,770 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2020-10-29 09:28:40,558 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-10-29 09:28:41,578 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-29 09:28:42,359 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-29 09:28:43,440 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-10-29 09:28:45,303 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2020-10-29 09:28:46,342 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-29 09:28:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:48,684 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-10-29 09:28:48,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 09:28:48,686 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 66 [2020-10-29 09:28:48,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:48,688 INFO L225 Difference]: With dead ends: 67 [2020-10-29 09:28:48,688 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 09:28:48,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=207, Invalid=2873, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 09:28:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 09:28:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-10-29 09:28:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 09:28:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-29 09:28:48,700 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 66 [2020-10-29 09:28:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:48,700 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-29 09:28:48,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 09:28:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-29 09:28:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 09:28:48,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:48,701 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:28:48,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:28:48,702 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:48,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:48,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2095531388, now seen corresponding path program 2 times [2020-10-29 09:28:48,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:48,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653546477] [2020-10-29 09:28:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:53,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 09:28:53,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 09:28:53,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:53,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-29 09:28:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 09:28:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:54,053 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-29 09:28:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:54,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:28:54,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:54,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:54,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:54,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:55,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:55,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:28:55,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:55,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-29 09:28:55,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:55,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:28:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:28:55,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:55,947 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-10-29 09:28:56,211 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-29 09:28:56,369 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-29 09:28:56,540 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-29 09:28:56,969 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-29 09:28:57,470 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-29 09:28:57,754 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-29 09:28:58,280 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2020-10-29 09:28:58,491 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-29 09:28:58,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:58,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:58,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:58,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:58,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:28:58,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:58,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:28:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:28:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:58,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:28:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:58,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:58,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:58,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:28:58,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:58,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:28:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:58,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:59,346 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-29 09:28:59,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:28:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:59,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 09:28:59,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:28:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:00,431 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-29 09:29:00,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:29:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:00,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:00,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:00,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:29:00,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 09:29:00,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:00,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:00,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:29:00,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:00,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:29:00,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:01,511 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2020-10-29 09:29:02,185 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 51 [2020-10-29 09:29:03,173 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 96 [2020-10-29 09:29:05,284 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 140 DAG size of output: 139 [2020-10-29 09:29:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:29:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:05,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:05,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:29:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 09:29:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:05,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:29:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:29:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:06,230 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-10-29 09:29:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:29:06,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653546477] [2020-10-29 09:29:06,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:29:06,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 09:29:06,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842443261] [2020-10-29 09:29:06,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 09:29:06,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:29:06,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 09:29:06,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1322, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 09:29:06,297 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 38 states. [2020-10-29 09:29:07,598 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2020-10-29 09:29:08,490 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-29 09:29:09,115 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-10-29 09:29:09,593 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62