/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:10:12,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:10:12,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:10:12,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:10:12,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:10:12,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:10:12,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:10:12,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:10:12,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:10:12,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:10:12,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:10:12,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:10:12,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:10:12,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:10:12,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:10:12,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:10:12,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:10:12,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:10:12,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:10:12,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:10:12,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:10:12,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:10:12,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:10:12,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:10:12,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:10:12,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:10:12,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:10:12,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:10:12,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:10:12,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:10:12,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:10:12,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:10:12,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:10:12,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:10:12,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:10:12,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:10:12,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:10:12,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:10:12,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:10:12,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:10:12,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:10:12,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:10:12,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:10:12,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:10:12,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:10:12,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:10:12,825 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:10:12,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:10:12,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:10:12,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:10:12,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:10:12,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:10:12,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:10:12,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:10:12,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:10:12,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:10:12,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:10:12,827 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:10:12,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:10:12,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:10:12,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:10:12,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:10:12,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:10:12,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:10:12,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:10:12,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:10:12,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:10:12,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:10:12,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:10:12,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:10:12,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:10:12,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:10:13,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:10:13,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:10:13,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:10:13,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:10:13,328 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:10:13,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-1.i [2020-10-27 01:10:13,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1d5374dd/d6b5e17162bc4542a10275084d628aef/FLAGc92cd9aff [2020-10-27 01:10:14,281 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:10:14,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-1.i [2020-10-27 01:10:14,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1d5374dd/d6b5e17162bc4542a10275084d628aef/FLAGc92cd9aff [2020-10-27 01:10:14,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1d5374dd/d6b5e17162bc4542a10275084d628aef [2020-10-27 01:10:14,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:10:14,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:10:14,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:10:14,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:10:14,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:10:14,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:10:14" (1/1) ... [2020-10-27 01:10:14,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b611e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:14, skipping insertion in model container [2020-10-27 01:10:14,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:10:14" (1/1) ... [2020-10-27 01:10:14,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:10:14,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:10:15,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:10:15,252 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:10:15,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:10:15,597 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:10:15,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:15 WrapperNode [2020-10-27 01:10:15,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:10:15,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:10:15,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:10:15,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:10:15,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:15" (1/1) ... [2020-10-27 01:10:15,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:15" (1/1) ... [2020-10-27 01:10:15,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:15" (1/1) ... [2020-10-27 01:10:15,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:15" (1/1) ... [2020-10-27 01:10:15,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:15" (1/1) ... [2020-10-27 01:10:15,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:15" (1/1) ... [2020-10-27 01:10:15,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:15" (1/1) ... [2020-10-27 01:10:15,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:10:15,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:10:15,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:10:15,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:10:15,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:10:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:10:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:10:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:10:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:10:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:10:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-27 01:10:15,866 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2020-10-27 01:10:15,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-10-27 01:10:15,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2020-10-27 01:10:15,866 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-10-27 01:10:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2020-10-27 01:10:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2020-10-27 01:10:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2020-10-27 01:10:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2020-10-27 01:10:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2020-10-27 01:10:15,869 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2020-10-27 01:10:15,869 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2020-10-27 01:10:15,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:10:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:10:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:10:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:10:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:10:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:10:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:10:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:10:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:10:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:10:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:10:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:10:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:10:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:10:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:10:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:10:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:10:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:10:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:10:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:10:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:10:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:10:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:10:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:10:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:10:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:10:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:10:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:10:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:10:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:10:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:10:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:10:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:10:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:10:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:10:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:10:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:10:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:10:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:10:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:10:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:10:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:10:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:10:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:10:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:10:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:10:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:10:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:10:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:10:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:10:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:10:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:10:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:10:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:10:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:10:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:10:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:10:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:10:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:10:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:10:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:10:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:10:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:10:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:10:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:10:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:10:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:10:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:10:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:10:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:10:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:10:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:10:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:10:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:10:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:10:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:10:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:10:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:10:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:10:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:10:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:10:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:10:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:10:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:10:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:10:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:10:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:10:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:10:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:10:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:10:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:10:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:10:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:10:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:10:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:10:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:10:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:10:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:10:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:10:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:10:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:10:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:10:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:10:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:10:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:10:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:10:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:10:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:10:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-27 01:10:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-27 01:10:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-27 01:10:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-27 01:10:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-27 01:10:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-27 01:10:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-27 01:10:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-27 01:10:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-27 01:10:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-27 01:10:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-27 01:10:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-27 01:10:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-27 01:10:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-27 01:10:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-27 01:10:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-27 01:10:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-27 01:10:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-27 01:10:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-27 01:10:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-27 01:10:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-27 01:10:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-27 01:10:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-27 01:10:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-27 01:10:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-27 01:10:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-27 01:10:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-27 01:10:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-27 01:10:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-27 01:10:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-27 01:10:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-27 01:10:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-27 01:10:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-27 01:10:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-27 01:10:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-27 01:10:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-27 01:10:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-27 01:10:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-27 01:10:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-27 01:10:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-27 01:10:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-27 01:10:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-27 01:10:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-27 01:10:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-27 01:10:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-27 01:10:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-27 01:10:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-27 01:10:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-27 01:10:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-27 01:10:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-27 01:10:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-27 01:10:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-27 01:10:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-27 01:10:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-27 01:10:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-27 01:10:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-27 01:10:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-27 01:10:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-27 01:10:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-27 01:10:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-27 01:10:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-27 01:10:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-27 01:10:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-27 01:10:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-27 01:10:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-27 01:10:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-27 01:10:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-27 01:10:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-27 01:10:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-27 01:10:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-27 01:10:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-27 01:10:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-27 01:10:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-27 01:10:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-27 01:10:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-27 01:10:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-27 01:10:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-27 01:10:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-27 01:10:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-27 01:10:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-27 01:10:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-27 01:10:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-27 01:10:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-27 01:10:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-27 01:10:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-27 01:10:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-27 01:10:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-27 01:10:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-27 01:10:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-27 01:10:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-27 01:10:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-27 01:10:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-27 01:10:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-27 01:10:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-27 01:10:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-27 01:10:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-27 01:10:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-27 01:10:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-27 01:10:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-27 01:10:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-27 01:10:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-27 01:10:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:10:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-27 01:10:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2020-10-27 01:10:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:10:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-10-27 01:10:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:10:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2020-10-27 01:10:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-10-27 01:10:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2020-10-27 01:10:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2020-10-27 01:10:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:10:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:10:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2020-10-27 01:10:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2020-10-27 01:10:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:10:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2020-10-27 01:10:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:10:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2020-10-27 01:10:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2020-10-27 01:10:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:10:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:10:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:10:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:10:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:10:17,228 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:10:17,229 INFO L298 CfgBuilder]: Removed 41 assume(true) statements. [2020-10-27 01:10:17,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:10:17 BoogieIcfgContainer [2020-10-27 01:10:17,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:10:17,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:10:17,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:10:17,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:10:17,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:10:14" (1/3) ... [2020-10-27 01:10:17,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cedfe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:10:17, skipping insertion in model container [2020-10-27 01:10:17,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:10:15" (2/3) ... [2020-10-27 01:10:17,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cedfe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:10:17, skipping insertion in model container [2020-10-27 01:10:17,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:10:17" (3/3) ... [2020-10-27 01:10:17,241 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2020-10-27 01:10:17,255 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:10:17,262 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:10:17,277 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:10:17,316 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:10:17,316 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:10:17,316 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:10:17,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:10:17,317 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:10:17,317 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:10:17,317 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:10:17,317 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:10:17,342 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-10-27 01:10:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:10:17,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:10:17,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:10:17,350 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:10:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:10:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash -246079649, now seen corresponding path program 1 times [2020-10-27 01:10:17,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:10:17,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988296276] [2020-10-27 01:10:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:10:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:17,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:17,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:10:17,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:10:17,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-27 01:10:17,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:10:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:10:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:10:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:10:18,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:10:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:18,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:18,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:18,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:18,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 01:10:18,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:18,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:18,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:18,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:10:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:18,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:10:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:18,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:18,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:18,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:18,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:18,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:10:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:10:18,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:10:18,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:10:18,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988296276] [2020-10-27 01:10:18,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:10:18,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:10:18,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21077643] [2020-10-27 01:10:18,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:10:18,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:10:18,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:10:18,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:10:18,363 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 7 states. [2020-10-27 01:10:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:10:19,724 INFO L93 Difference]: Finished difference Result 308 states and 497 transitions. [2020-10-27 01:10:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:10:19,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-27 01:10:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:10:19,743 INFO L225 Difference]: With dead ends: 308 [2020-10-27 01:10:19,743 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 01:10:19,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:10:19,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 01:10:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 131. [2020-10-27 01:10:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 01:10:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-10-27 01:10:19,834 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 16 [2020-10-27 01:10:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:10:19,834 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-10-27 01:10:19,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:10:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-10-27 01:10:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 01:10:19,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:10:19,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:10:19,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:10:19,838 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:10:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:10:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1176936722, now seen corresponding path program 1 times [2020-10-27 01:10:19,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:10:19,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769145171] [2020-10-27 01:10:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:10:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:20,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:20,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 01:10:20,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-27 01:10:20,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:20,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:10:20,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:10:20,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 01:10:20,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:21,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:10:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:21,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:21,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:21,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:21,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:10:21,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:10:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:21,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:10:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:21,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:21,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:10:21,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:21,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-27 01:10:21,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:21,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:10:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 01:10:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:21,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:10:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:21,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:21,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:10:21,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:21,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-27 01:10:21,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:10:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 01:10:21,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:21,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:10:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:21,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:22,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:10:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 01:10:22,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:10:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:10:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:10:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:22,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:22,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:22,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:22,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:22,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 01:10:22,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:10:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:10:22,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:10:22,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769145171] [2020-10-27 01:10:22,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:10:22,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 01:10:22,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739485549] [2020-10-27 01:10:22,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 01:10:22,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:10:22,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 01:10:22,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:10:22,269 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 16 states. [2020-10-27 01:10:23,568 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-27 01:10:23,809 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-27 01:10:24,023 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-27 01:10:24,180 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-27 01:10:24,369 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-27 01:10:24,543 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-27 01:10:26,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:10:26,845 INFO L93 Difference]: Finished difference Result 250 states and 297 transitions. [2020-10-27 01:10:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:10:26,847 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-27 01:10:26,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:10:26,851 INFO L225 Difference]: With dead ends: 250 [2020-10-27 01:10:26,852 INFO L226 Difference]: Without dead ends: 242 [2020-10-27 01:10:26,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 01:10:26,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-27 01:10:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 211. [2020-10-27 01:10:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-27 01:10:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 253 transitions. [2020-10-27 01:10:26,933 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 253 transitions. Word has length 39 [2020-10-27 01:10:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:10:26,934 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 253 transitions. [2020-10-27 01:10:26,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 01:10:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 253 transitions. [2020-10-27 01:10:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 01:10:26,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:10:26,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:10:26,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:10:26,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:10:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:10:26,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1868463441, now seen corresponding path program 1 times [2020-10-27 01:10:26,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:10:26,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238723981] [2020-10-27 01:10:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:10:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:28,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:28,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:10:28,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:28,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-10-27 01:10:28,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:10:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:10:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 01:10:28,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:28,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:10:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:28,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:28,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:28,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:10:28,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:10:28,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:28,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:10:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:28,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:28,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:28,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:10:28,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:28,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-27 01:10:28,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:10:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:10:28,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:10:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:29,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:29,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:29,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:10:29,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:29,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-27 01:10:29,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:10:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:10:29,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:10:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:29,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:29,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:10:29,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:29,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 01:10:29,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:10:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:10:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:29,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:10:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:29,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:29,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:29,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:10:29,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:29,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:10:29,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:29,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:10:29,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:10:30,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238723981] [2020-10-27 01:10:30,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:10:30,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 01:10:30,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962889901] [2020-10-27 01:10:30,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:10:30,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:10:30,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:10:30,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:10:30,017 INFO L87 Difference]: Start difference. First operand 211 states and 253 transitions. Second operand 19 states. [2020-10-27 01:10:34,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:10:34,599 INFO L93 Difference]: Finished difference Result 335 states and 405 transitions. [2020-10-27 01:10:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 01:10:34,600 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2020-10-27 01:10:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:10:34,605 INFO L225 Difference]: With dead ends: 335 [2020-10-27 01:10:34,605 INFO L226 Difference]: Without dead ends: 330 [2020-10-27 01:10:34,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 01:10:34,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-27 01:10:34,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 292. [2020-10-27 01:10:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 01:10:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 355 transitions. [2020-10-27 01:10:34,672 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 355 transitions. Word has length 42 [2020-10-27 01:10:34,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:10:34,673 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 355 transitions. [2020-10-27 01:10:34,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:10:34,673 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 355 transitions. [2020-10-27 01:10:34,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 01:10:34,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:10:34,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:10:34,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:10:34,679 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:10:34,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:10:34,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1056603810, now seen corresponding path program 1 times [2020-10-27 01:10:34,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:10:34,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592412692] [2020-10-27 01:10:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:10:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:35,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:35,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 01:10:35,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:35,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-27 01:10:35,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:10:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:10:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 01:10:35,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:10:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:35,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:35,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:35,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:10:35,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:10:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:35,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:10:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:36,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:36,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:10:36,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-27 01:10:36,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:10:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:10:36,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:10:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:36,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:36,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:10:36,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:36,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-27 01:10:36,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:10:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:10:36,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:36,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:10:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:36,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:36,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:36,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:10:36,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 01:10:36,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:36,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:10:36,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:36,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:10:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:37,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:10:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:37,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:37,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:37,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:37,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:37,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:10:37,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:10:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:10:37,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:10:37,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592412692] [2020-10-27 01:10:37,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:10:37,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 01:10:37,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256502621] [2020-10-27 01:10:37,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:10:37,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:10:37,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:10:37,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:10:37,222 INFO L87 Difference]: Start difference. First operand 292 states and 355 transitions. Second operand 18 states. [2020-10-27 01:10:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:10:41,550 INFO L93 Difference]: Finished difference Result 329 states and 396 transitions. [2020-10-27 01:10:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 01:10:41,551 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-27 01:10:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:10:41,555 INFO L225 Difference]: With dead ends: 329 [2020-10-27 01:10:41,556 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 01:10:41,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 01:10:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 01:10:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 292. [2020-10-27 01:10:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 01:10:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 354 transitions. [2020-10-27 01:10:41,659 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 354 transitions. Word has length 45 [2020-10-27 01:10:41,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:10:41,662 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 354 transitions. [2020-10-27 01:10:41,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:10:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 354 transitions. [2020-10-27 01:10:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 01:10:41,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:10:41,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:10:41,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:10:41,669 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:10:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:10:41,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1810679932, now seen corresponding path program 1 times [2020-10-27 01:10:41,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:10:41,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191408812] [2020-10-27 01:10:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:10:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:41,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:42,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:42,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 01:10:42,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:42,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-10-27 01:10:42,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 01:10:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:10:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 01:10:42,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:42,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:10:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:42,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:42,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:42,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:10:42,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:10:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:42,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:10:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:43,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:10:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-27 01:10:43,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:10:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:43,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:10:43,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:10:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:43,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:43,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:43,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:10:43,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-27 01:10:43,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:10:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:10:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:10:44,083 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-27 01:10:44,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:10:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:44,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:44,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:44,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:10:44,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:44,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 01:10:44,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:44,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:10:44,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:10:44,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:10:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:44,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:44,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:44,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:44,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:10:44,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:10:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:10:44,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:10:44,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191408812] [2020-10-27 01:10:44,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:10:44,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 01:10:44,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973312085] [2020-10-27 01:10:44,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:10:44,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:10:44,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:10:44,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:10:44,784 INFO L87 Difference]: Start difference. First operand 292 states and 354 transitions. Second operand 19 states. [2020-10-27 01:10:45,982 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-27 01:10:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:10:49,315 INFO L93 Difference]: Finished difference Result 329 states and 395 transitions. [2020-10-27 01:10:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:10:49,316 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-27 01:10:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:10:49,333 INFO L225 Difference]: With dead ends: 329 [2020-10-27 01:10:49,334 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 01:10:49,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 01:10:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 01:10:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 292. [2020-10-27 01:10:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 01:10:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 353 transitions. [2020-10-27 01:10:49,377 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 353 transitions. Word has length 48 [2020-10-27 01:10:49,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:10:49,377 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 353 transitions. [2020-10-27 01:10:49,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:10:49,377 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 353 transitions. [2020-10-27 01:10:49,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 01:10:49,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:10:49,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:10:49,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:10:49,385 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:10:49,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:10:49,386 INFO L82 PathProgramCache]: Analyzing trace with hash 448613391, now seen corresponding path program 1 times [2020-10-27 01:10:49,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:10:49,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482544289] [2020-10-27 01:10:49,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:10:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:49,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:51,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:51,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 01:10:51,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:10:51,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2460 [2020-10-27 01:10:51,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 01:10:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:10:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 01:10:51,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:53,727 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 280 DAG size of output: 56 [2020-10-27 01:10:55,160 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 280 DAG size of output: 57 [2020-10-27 01:10:55,697 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 34 [2020-10-27 01:10:56,343 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 42 [2020-10-27 01:10:56,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:10:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:56,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:56,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:56,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:10:56,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:10:56,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:10:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:10:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:10:56,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:10:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:56,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:57,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:57,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:10:57,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:57,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-27 01:10:57,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:10:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:10:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:58,328 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2020-10-27 01:10:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:10:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:10:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:10:58,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:10:58,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:10:58,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:10:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-27 01:10:58,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:10:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:10:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:10:58,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:10:58,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:10:59,859 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 90 [2020-10-27 01:10:59,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:11:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:00,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:00,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:11:00,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-27 01:11:00,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:11:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:11:00,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:11:01,330 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 86 [2020-10-27 01:11:01,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:11:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:01,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:01,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:01,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:01,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 01:11:01,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:01,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:11:01,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:01,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:11:01,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:11:02,042 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2020-10-27 01:11:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:11:02,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482544289] [2020-10-27 01:11:02,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:11:02,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-27 01:11:02,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98962570] [2020-10-27 01:11:02,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 01:11:02,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:11:02,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 01:11:02,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-10-27 01:11:02,131 INFO L87 Difference]: Start difference. First operand 292 states and 353 transitions. Second operand 22 states. [2020-10-27 01:11:02,567 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 54 [2020-10-27 01:11:02,994 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-27 01:11:03,340 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-27 01:11:03,674 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 01:11:04,312 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 01:11:04,709 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 01:11:05,028 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 01:11:06,184 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 126 [2020-10-27 01:11:06,618 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-27 01:11:06,904 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 01:11:07,434 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-27 01:11:07,618 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 01:11:08,273 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 160 [2020-10-27 01:11:09,174 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 172 [2020-10-27 01:11:09,823 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 161 [2020-10-27 01:11:10,460 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 149 [2020-10-27 01:11:11,148 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 155 [2020-10-27 01:11:11,762 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 144 [2020-10-27 01:11:12,380 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 151 [2020-10-27 01:11:16,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:11:16,562 INFO L93 Difference]: Finished difference Result 323 states and 386 transitions. [2020-10-27 01:11:16,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 01:11:16,563 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-27 01:11:16,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:11:16,570 INFO L225 Difference]: With dead ends: 323 [2020-10-27 01:11:16,570 INFO L226 Difference]: Without dead ends: 318 [2020-10-27 01:11:16,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=271, Invalid=1535, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 01:11:16,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-27 01:11:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 292. [2020-10-27 01:11:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 01:11:16,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 352 transitions. [2020-10-27 01:11:16,629 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 352 transitions. Word has length 51 [2020-10-27 01:11:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:11:16,633 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 352 transitions. [2020-10-27 01:11:16,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 01:11:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 352 transitions. [2020-10-27 01:11:16,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 01:11:16,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:11:16,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:11:16,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:11:16,637 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:11:16,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:11:16,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1445890676, now seen corresponding path program 1 times [2020-10-27 01:11:16,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:11:16,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629613415] [2020-10-27 01:11:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:11:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:17,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:17,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 01:11:17,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-10-27 01:11:17,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:17,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 01:11:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:11:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:11:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:17,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:11:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:17,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:17,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:17,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:11:17,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:11:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:17,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:11:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:17,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:18,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:18,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:11:18,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 01:11:18,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:11:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:11:18,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:11:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:18,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:18,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:18,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:11:18,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-27 01:11:18,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:11:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:11:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:18,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:11:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:18,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:18,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:11:18,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 01:11:18,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:11:18,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:18,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:11:18,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:18,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:11:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:18,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:18,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:18,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:18,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 01:11:18,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:11:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:11:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:11:19,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629613415] [2020-10-27 01:11:19,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:11:19,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 01:11:19,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965717017] [2020-10-27 01:11:19,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:11:19,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:11:19,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:11:19,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:11:19,074 INFO L87 Difference]: Start difference. First operand 292 states and 352 transitions. Second operand 19 states. [2020-10-27 01:11:19,581 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-27 01:11:19,749 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-27 01:11:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:11:24,464 INFO L93 Difference]: Finished difference Result 334 states and 399 transitions. [2020-10-27 01:11:24,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 01:11:24,465 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-10-27 01:11:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:11:24,468 INFO L225 Difference]: With dead ends: 334 [2020-10-27 01:11:24,469 INFO L226 Difference]: Without dead ends: 329 [2020-10-27 01:11:24,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=273, Invalid=1449, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 01:11:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-27 01:11:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 300. [2020-10-27 01:11:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-27 01:11:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 359 transitions. [2020-10-27 01:11:24,523 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 359 transitions. Word has length 54 [2020-10-27 01:11:24,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:11:24,524 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 359 transitions. [2020-10-27 01:11:24,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:11:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 359 transitions. [2020-10-27 01:11:24,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 01:11:24,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:11:24,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:11:24,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:11:24,525 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:11:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:11:24,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1452185530, now seen corresponding path program 1 times [2020-10-27 01:11:24,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:11:24,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577243115] [2020-10-27 01:11:24,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:11:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:24,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:25,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:25,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 01:11:25,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-27 01:11:25,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 01:11:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:11:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 01:11:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:25,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:11:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:25,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:25,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:25,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:11:25,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:11:25,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:25,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:11:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:26,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:26,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:11:26,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-27 01:11:26,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:11:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:11:26,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:11:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:26,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:26,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:11:26,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:26,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-27 01:11:26,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:11:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:11:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:26,866 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-27 01:11:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:11:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:26,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:27,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:27,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:11:27,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 01:11:27,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:11:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:11:27,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:27,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:11:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:27,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:27,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:27,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 01:11:27,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:11:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:11:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:11:27,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577243115] [2020-10-27 01:11:27,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:11:27,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 01:11:27,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236768019] [2020-10-27 01:11:27,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:11:27,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:11:27,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:11:27,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:11:27,485 INFO L87 Difference]: Start difference. First operand 300 states and 359 transitions. Second operand 20 states. [2020-10-27 01:11:28,753 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 01:11:30,552 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 01:11:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:11:33,950 INFO L93 Difference]: Finished difference Result 329 states and 391 transitions. [2020-10-27 01:11:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 01:11:33,954 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-27 01:11:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:11:33,957 INFO L225 Difference]: With dead ends: 329 [2020-10-27 01:11:33,957 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 01:11:33,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 01:11:33,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 01:11:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 300. [2020-10-27 01:11:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-27 01:11:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 358 transitions. [2020-10-27 01:11:34,011 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 358 transitions. Word has length 57 [2020-10-27 01:11:34,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:11:34,012 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 358 transitions. [2020-10-27 01:11:34,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:11:34,012 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 358 transitions. [2020-10-27 01:11:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 01:11:34,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:11:34,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:11:34,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:11:34,014 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:11:34,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:11:34,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1930027834, now seen corresponding path program 1 times [2020-10-27 01:11:34,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:11:34,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176318508] [2020-10-27 01:11:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:11:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:37,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:37,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 01:11:37,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:37,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3074 [2020-10-27 01:11:37,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:37,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 01:11:37,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:11:37,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 01:11:37,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:11:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:37,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:37,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:37,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:11:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:11:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:37,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:11:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:39,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:39,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:11:39,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:39,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1615 [2020-10-27 01:11:39,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 01:11:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:11:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:11:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:39,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:39,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:11:39,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 01:11:39,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:11:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:11:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:39,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:11:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:39,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:39,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:11:39,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 01:11:39,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:11:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:11:39,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:39,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:11:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:39,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:39,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:39,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:39,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:11:39,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:11:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:11:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:39,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:11:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:40,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:40,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:40,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:11:40,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-27 01:11:40,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:11:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:11:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:11:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:11:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:40,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:40,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:40,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:11:40,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:40,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 01:11:40,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:11:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:11:40,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:11:40,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:11:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:40,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:40,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:40,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:40,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:11:40,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:11:40,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:40,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:11:40,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:11:41,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176318508] [2020-10-27 01:11:41,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:11:41,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 01:11:41,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752490735] [2020-10-27 01:11:41,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 01:11:41,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:11:41,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 01:11:41,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2020-10-27 01:11:41,149 INFO L87 Difference]: Start difference. First operand 300 states and 358 transitions. Second operand 26 states. [2020-10-27 01:11:41,982 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-27 01:11:42,291 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 01:11:42,537 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 01:11:42,715 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 01:11:42,933 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-27 01:11:43,858 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-27 01:11:44,572 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 01:11:45,072 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-27 01:11:45,758 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-27 01:11:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:11:49,316 INFO L93 Difference]: Finished difference Result 424 states and 507 transitions. [2020-10-27 01:11:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 01:11:49,322 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 63 [2020-10-27 01:11:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:11:49,326 INFO L225 Difference]: With dead ends: 424 [2020-10-27 01:11:49,326 INFO L226 Difference]: Without dead ends: 419 [2020-10-27 01:11:49,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=355, Invalid=2195, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 01:11:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-10-27 01:11:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 389. [2020-10-27 01:11:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-27 01:11:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 467 transitions. [2020-10-27 01:11:49,414 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 467 transitions. Word has length 63 [2020-10-27 01:11:49,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:11:49,416 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 467 transitions. [2020-10-27 01:11:49,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 01:11:49,416 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 467 transitions. [2020-10-27 01:11:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 01:11:49,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:11:49,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:11:49,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:11:49,419 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:11:49,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:11:49,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1537962617, now seen corresponding path program 1 times [2020-10-27 01:11:49,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:11:49,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119375402] [2020-10-27 01:11:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:11:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:49,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:50,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:50,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 01:11:50,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:50,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-10-27 01:11:50,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:50,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 01:11:50,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:11:50,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 01:11:50,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:50,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:11:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:50,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:50,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:50,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:50,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:11:50,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:11:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:50,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:11:50,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:50,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:11:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:51,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:51,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:11:51,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:51,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 01:11:51,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:51,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:11:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:11:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:11:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:51,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:51,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:11:51,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 01:11:51,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:11:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:11:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:51,651 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 01:11:51,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:11:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:51,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:51,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:11:51,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 01:11:51,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:11:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:11:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:11:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:11:52,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:11:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:52,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:52,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:52,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:11:52,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:11:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 01:11:52,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:52,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:11:52,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:11:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:11:52,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:11:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:11:52,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119375402] [2020-10-27 01:11:52,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:11:52,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 01:11:52,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458136379] [2020-10-27 01:11:52,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:11:52,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:11:52,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:11:52,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:11:52,324 INFO L87 Difference]: Start difference. First operand 389 states and 467 transitions. Second operand 20 states. [2020-10-27 01:11:55,127 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 01:11:55,529 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 01:11:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:11:58,610 INFO L93 Difference]: Finished difference Result 412 states and 491 transitions. [2020-10-27 01:11:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 01:11:58,611 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2020-10-27 01:11:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:11:58,615 INFO L225 Difference]: With dead ends: 412 [2020-10-27 01:11:58,615 INFO L226 Difference]: Without dead ends: 407 [2020-10-27 01:11:58,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 01:11:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-27 01:11:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 389. [2020-10-27 01:11:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-27 01:11:58,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 466 transitions. [2020-10-27 01:11:58,676 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 466 transitions. Word has length 60 [2020-10-27 01:11:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:11:58,677 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 466 transitions. [2020-10-27 01:11:58,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:11:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 466 transitions. [2020-10-27 01:11:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 01:11:58,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:11:58,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:11:58,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:11:58,679 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:11:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:11:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1947238649, now seen corresponding path program 1 times [2020-10-27 01:11:58,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:11:58,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244326181] [2020-10-27 01:11:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:11:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:11:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:11:59,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:11:59,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 01:11:59,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:11:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-10-27 01:11:59,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:11:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 01:11:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:11:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 01:11:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:00,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:12:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:00,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:00,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:00,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:00,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:00,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:12:00,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:12:00,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:00,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:12:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:00,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:00,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:00,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:12:00,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:00,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 01:12:00,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:12:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:12:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:00,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:00,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:12:00,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 01:12:00,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:12:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:12:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:01,080 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-27 01:12:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:12:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:01,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:01,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:12:01,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 01:12:01,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:12:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:12:01,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:01,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:01,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:01,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:01,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:01,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:12:01,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:12:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:12:01,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:12:01,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244326181] [2020-10-27 01:12:01,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:12:01,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 01:12:01,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412149539] [2020-10-27 01:12:01,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:12:01,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:12:01,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:12:01,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:12:01,840 INFO L87 Difference]: Start difference. First operand 389 states and 466 transitions. Second operand 20 states. [2020-10-27 01:12:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:12:07,593 INFO L93 Difference]: Finished difference Result 411 states and 489 transitions. [2020-10-27 01:12:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:12:07,595 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2020-10-27 01:12:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:12:07,598 INFO L225 Difference]: With dead ends: 411 [2020-10-27 01:12:07,598 INFO L226 Difference]: Without dead ends: 406 [2020-10-27 01:12:07,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 01:12:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-27 01:12:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 389. [2020-10-27 01:12:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-27 01:12:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 465 transitions. [2020-10-27 01:12:07,658 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 465 transitions. Word has length 63 [2020-10-27 01:12:07,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:12:07,659 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 465 transitions. [2020-10-27 01:12:07,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:12:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 465 transitions. [2020-10-27 01:12:07,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 01:12:07,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:12:07,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:12:07,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:12:07,661 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:12:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:12:07,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1170400281, now seen corresponding path program 1 times [2020-10-27 01:12:07,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:12:07,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79122331] [2020-10-27 01:12:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:12:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:10,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:10,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 01:12:10,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2323 [2020-10-27 01:12:10,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 01:12:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:12:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 01:12:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:12:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:10,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:10,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:10,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:10,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:12:10,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:10,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:10,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:10,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:12:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:10,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:12:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:10,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:12,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:12,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:12:12,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-10-27 01:12:12,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 01:12:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:12:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:12,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:12,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:12,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:12:12,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:12,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 01:12:12,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:12:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:12:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:13,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:12:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:13,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:13,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:13,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:12:13,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:13,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 01:12:13,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:12:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:12:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:13,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:13,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:13,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:13,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:13,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:12:13,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:13,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:12:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:12:13,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:13,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:12:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:13,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:13,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:12:13,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:13,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 01:12:13,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:13,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:12:13,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:12:13,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:14,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:12:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:14,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:14,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:14,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:12:14,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:14,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 01:12:14,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:14,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:12:14,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:14,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:12:14,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:14,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:14,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:14,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:14,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:14,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:12:14,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:14,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:12:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:12:14,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:12:14,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79122331] [2020-10-27 01:12:14,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:12:14,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 01:12:14,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032748842] [2020-10-27 01:12:14,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 01:12:14,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:12:14,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 01:12:14,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:12:14,424 INFO L87 Difference]: Start difference. First operand 389 states and 465 transitions. Second operand 27 states. [2020-10-27 01:12:15,283 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-10-27 01:12:15,916 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 01:12:16,304 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-27 01:12:16,736 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-27 01:12:16,939 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-27 01:12:17,121 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-27 01:12:17,333 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-10-27 01:12:17,647 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2020-10-27 01:12:18,005 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2020-10-27 01:12:18,467 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 01:12:18,798 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 01:12:19,023 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 01:12:19,265 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-10-27 01:12:19,620 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-27 01:12:20,688 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-27 01:12:21,132 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-27 01:12:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:12:26,377 INFO L93 Difference]: Finished difference Result 461 states and 548 transitions. [2020-10-27 01:12:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 01:12:26,379 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 66 [2020-10-27 01:12:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:12:26,383 INFO L225 Difference]: With dead ends: 461 [2020-10-27 01:12:26,383 INFO L226 Difference]: Without dead ends: 456 [2020-10-27 01:12:26,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=537, Invalid=3245, Unknown=0, NotChecked=0, Total=3782 [2020-10-27 01:12:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-10-27 01:12:26,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 417. [2020-10-27 01:12:26,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-27 01:12:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 500 transitions. [2020-10-27 01:12:26,446 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 500 transitions. Word has length 66 [2020-10-27 01:12:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:12:26,446 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 500 transitions. [2020-10-27 01:12:26,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 01:12:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 500 transitions. [2020-10-27 01:12:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 01:12:26,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:12:26,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:12:26,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:12:26,448 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:12:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:12:26,449 INFO L82 PathProgramCache]: Analyzing trace with hash -2108632218, now seen corresponding path program 1 times [2020-10-27 01:12:26,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:12:26,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880562594] [2020-10-27 01:12:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:12:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:26,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:28,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 01:12:28,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:12:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1822 [2020-10-27 01:12:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 01:12:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:12:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 01:12:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:12:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:28,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:28,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:28,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:28,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:12:28,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:12:28,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:28,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:12:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:28,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:29,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:29,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:12:29,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:29,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-27 01:12:29,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:29,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:12:29,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:29,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:12:29,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:29,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:29,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:12:29,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:29,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-27 01:12:29,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:29,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:12:29,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:29,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:12:29,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:29,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:12:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:29,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:29,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:29,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:12:29,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:29,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 01:12:29,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:29,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:12:29,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:12:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:30,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:30,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:30,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:12:30,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:12:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:12:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:12:30,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880562594] [2020-10-27 01:12:30,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:12:30,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 01:12:30,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151377990] [2020-10-27 01:12:30,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:12:30,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:12:30,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:12:30,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:12:30,246 INFO L87 Difference]: Start difference. First operand 417 states and 500 transitions. Second operand 20 states. [2020-10-27 01:12:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:12:36,498 INFO L93 Difference]: Finished difference Result 434 states and 517 transitions. [2020-10-27 01:12:36,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 01:12:36,503 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2020-10-27 01:12:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:12:36,507 INFO L225 Difference]: With dead ends: 434 [2020-10-27 01:12:36,507 INFO L226 Difference]: Without dead ends: 429 [2020-10-27 01:12:36,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 01:12:36,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-10-27 01:12:36,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 417. [2020-10-27 01:12:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-27 01:12:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 499 transitions. [2020-10-27 01:12:36,569 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 499 transitions. Word has length 66 [2020-10-27 01:12:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:12:36,569 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 499 transitions. [2020-10-27 01:12:36,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:12:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 499 transitions. [2020-10-27 01:12:36,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 01:12:36,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:12:36,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:12:36,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:12:36,571 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:12:36,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:12:36,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1102816347, now seen corresponding path program 1 times [2020-10-27 01:12:36,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:12:36,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814904569] [2020-10-27 01:12:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:12:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:36,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:38,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:38,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 01:12:38,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2090 [2020-10-27 01:12:38,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 01:12:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:12:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 01:12:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:39,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:12:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:39,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:39,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:39,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:39,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:12:39,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:12:39,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:39,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:12:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:39,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:40,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:40,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:12:40,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1588 [2020-10-27 01:12:40,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 01:12:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:12:40,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:40,932 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-27 01:12:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:41,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:41,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:12:41,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:41,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 01:12:41,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:12:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:12:41,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:41,739 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-27 01:12:41,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:12:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:42,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:42,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:12:42,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:42,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 01:12:42,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:12:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:12:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:42,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:42,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:42,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:42,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 01:12:42,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:42,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:12:42,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:42,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:12:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:12:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:42,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:42,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:12:42,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-27 01:12:42,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:12:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:12:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:43,213 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-27 01:12:43,406 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-27 01:12:43,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:12:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:43,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:43,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:12:43,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:43,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 01:12:43,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:12:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:12:43,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:44,089 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-27 01:12:44,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:44,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:44,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:44,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 01:12:44,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:12:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:12:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:44,628 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-27 01:12:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:12:44,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814904569] [2020-10-27 01:12:44,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:12:44,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 01:12:44,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292619472] [2020-10-27 01:12:44,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 01:12:44,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:12:44,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 01:12:44,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2020-10-27 01:12:44,698 INFO L87 Difference]: Start difference. First operand 417 states and 499 transitions. Second operand 28 states. [2020-10-27 01:12:45,743 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-27 01:12:46,264 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 01:12:46,769 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:12:47,191 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 01:12:47,844 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-10-27 01:12:48,456 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-10-27 01:12:48,827 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-27 01:12:49,489 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 01:12:49,917 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-27 01:12:50,351 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-27 01:12:50,875 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 01:12:51,258 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 01:12:51,767 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 01:12:52,279 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-27 01:12:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:12:57,536 INFO L93 Difference]: Finished difference Result 443 states and 527 transitions. [2020-10-27 01:12:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 01:12:57,538 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 69 [2020-10-27 01:12:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:12:57,543 INFO L225 Difference]: With dead ends: 443 [2020-10-27 01:12:57,543 INFO L226 Difference]: Without dead ends: 438 [2020-10-27 01:12:57,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=329, Invalid=2427, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 01:12:57,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-27 01:12:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 417. [2020-10-27 01:12:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-27 01:12:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 498 transitions. [2020-10-27 01:12:57,643 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 498 transitions. Word has length 69 [2020-10-27 01:12:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:12:57,643 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 498 transitions. [2020-10-27 01:12:57,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 01:12:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 498 transitions. [2020-10-27 01:12:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 01:12:57,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:12:57,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:12:57,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 01:12:57,646 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:12:57,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:12:57,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1290864496, now seen corresponding path program 1 times [2020-10-27 01:12:57,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:12:57,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095707006] [2020-10-27 01:12:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:12:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:57,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:57,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:59,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:59,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 01:12:59,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:12:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1363 [2020-10-27 01:12:59,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 01:12:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:12:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 01:12:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:12:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:59,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:59,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:59,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:12:59,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:12:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:59,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:12:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:59,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:59,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:12:59,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-27 01:12:59,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:12:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:12:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:59,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:59,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:59,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:59,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:12:59,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-27 01:12:59,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:12:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:12:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:00,254 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-27 01:13:00,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:13:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:00,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:00,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:13:00,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:00,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 01:13:00,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:00,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:13:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:00,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:13:00,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:00,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:00,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:00,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:00,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:13:00,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:13:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:13:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:13:00,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095707006] [2020-10-27 01:13:00,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:13:00,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 01:13:00,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420463782] [2020-10-27 01:13:00,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:13:00,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:00,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:13:00,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:13:00,856 INFO L87 Difference]: Start difference. First operand 417 states and 498 transitions. Second operand 20 states. [2020-10-27 01:13:03,565 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 01:13:07,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:07,045 INFO L93 Difference]: Finished difference Result 432 states and 513 transitions. [2020-10-27 01:13:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:13:07,046 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-10-27 01:13:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:07,049 INFO L225 Difference]: With dead ends: 432 [2020-10-27 01:13:07,050 INFO L226 Difference]: Without dead ends: 427 [2020-10-27 01:13:07,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=195, Invalid=1211, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 01:13:07,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-27 01:13:07,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 416. [2020-10-27 01:13:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-27 01:13:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 493 transitions. [2020-10-27 01:13:07,129 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 493 transitions. Word has length 68 [2020-10-27 01:13:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:07,130 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 493 transitions. [2020-10-27 01:13:07,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:13:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 493 transitions. [2020-10-27 01:13:07,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 01:13:07,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:07,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:13:07,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 01:13:07,132 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:07,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:07,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1475050566, now seen corresponding path program 1 times [2020-10-27 01:13:07,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:07,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686630805] [2020-10-27 01:13:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:07,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:10,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:10,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 01:13:10,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:10,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2899 [2020-10-27 01:13:10,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 01:13:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:13:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 01:13:10,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:10,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:10,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:10,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:10,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:13:10,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:10,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:13:10,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:13:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:10,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:11,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:11,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:13:11,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-27 01:13:11,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 01:13:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:13:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:12,311 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-10-27 01:13:12,486 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-27 01:13:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:12,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:12,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:13:12,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:12,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 01:13:12,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:13:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:13:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:13:13,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:13:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:13,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:13,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:13,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:13:13,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:13,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 01:13:13,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:13,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:13:13,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:13,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:13,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:13,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:13,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:13,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:13,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:13,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:13:13,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:13,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:13:13,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:13,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:13:13,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:13,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:13:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:13,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:13,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:13,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:13:13,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:13,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 01:13:13,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:13:13,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:13,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:13:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:14,058 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-27 01:13:14,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:13:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:14,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:14,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:13:14,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:14,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 01:13:14,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:14,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:13:14,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:14,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:14,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:14,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:14,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:14,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:14,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:14,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:14,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 01:13:14,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:13:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:14,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:13:14,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:14,979 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-27 01:13:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:13:15,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686630805] [2020-10-27 01:13:15,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:13:15,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 01:13:15,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690103912] [2020-10-27 01:13:15,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 01:13:15,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:15,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 01:13:15,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:13:15,048 INFO L87 Difference]: Start difference. First operand 416 states and 493 transitions. Second operand 27 states. [2020-10-27 01:13:15,538 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-10-27 01:13:16,323 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2020-10-27 01:13:16,710 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 87 [2020-10-27 01:13:17,017 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 66 [2020-10-27 01:13:17,596 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2020-10-27 01:13:17,965 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 01:13:18,270 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 01:13:18,623 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-27 01:13:19,166 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2020-10-27 01:13:19,989 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2020-10-27 01:13:20,769 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-27 01:13:21,169 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 01:13:21,462 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 01:13:21,940 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-27 01:13:22,702 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-10-27 01:13:23,049 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2020-10-27 01:13:23,466 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-27 01:13:23,934 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-27 01:13:24,338 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 01:13:24,609 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 01:13:24,901 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2020-10-27 01:13:25,497 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2020-10-27 01:13:26,028 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-10-27 01:13:31,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:31,914 INFO L93 Difference]: Finished difference Result 456 states and 536 transitions. [2020-10-27 01:13:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 01:13:31,918 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 72 [2020-10-27 01:13:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:31,921 INFO L225 Difference]: With dead ends: 456 [2020-10-27 01:13:31,921 INFO L226 Difference]: Without dead ends: 451 [2020-10-27 01:13:31,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=390, Invalid=3270, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 01:13:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-27 01:13:31,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 416. [2020-10-27 01:13:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-27 01:13:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 492 transitions. [2020-10-27 01:13:32,000 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 492 transitions. Word has length 72 [2020-10-27 01:13:32,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:32,000 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 492 transitions. [2020-10-27 01:13:32,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 01:13:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 492 transitions. [2020-10-27 01:13:32,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 01:13:32,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:32,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:13:32,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 01:13:32,004 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:32,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:32,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1271809525, now seen corresponding path program 1 times [2020-10-27 01:13:32,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:32,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277545919] [2020-10-27 01:13:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:32,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:34,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:34,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 01:13:34,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2063 [2020-10-27 01:13:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 01:13:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:13:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 01:13:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:34,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:34,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:34,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:13:34,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:13:34,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:34,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 01:13:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:35,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:13:35,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-27 01:13:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 01:13:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:13:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:35,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:35,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:35,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:13:35,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:35,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 01:13:35,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:35,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:13:35,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:35,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:13:35,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:36,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:13:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:36,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:36,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:36,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:13:36,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:36,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 01:13:36,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:13:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:36,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:36,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:36,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:36,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:36,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:36,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:36,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:13:36,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:36,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:13:36,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:36,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:13:36,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:36,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 01:13:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:36,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:36,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:36,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:13:36,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:36,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 01:13:36,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:13:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 01:13:36,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 01:13:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:36,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:36,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:36,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:13:36,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:36,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 01:13:36,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:13:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:36,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:37,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:37,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:37,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:37,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:37,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:13:37,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:13:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:13:37,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 01:13:37,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277545919] [2020-10-27 01:13:37,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:13:37,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 01:13:37,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566001372] [2020-10-27 01:13:37,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 01:13:37,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:37,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 01:13:37,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:13:37,128 INFO L87 Difference]: Start difference. First operand 416 states and 492 transitions. Second operand 27 states. [2020-10-27 01:13:38,066 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-27 01:13:38,598 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 01:13:38,984 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-27 01:13:39,190 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-27 01:13:40,292 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-27 01:13:41,797 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-27 01:13:45,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:45,243 INFO L93 Difference]: Finished difference Result 439 states and 517 transitions. [2020-10-27 01:13:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 01:13:45,249 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 75 [2020-10-27 01:13:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:45,252 INFO L225 Difference]: With dead ends: 439 [2020-10-27 01:13:45,252 INFO L226 Difference]: Without dead ends: 434 [2020-10-27 01:13:45,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=463, Invalid=2729, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 01:13:45,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-27 01:13:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 416. [2020-10-27 01:13:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-27 01:13:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 491 transitions. [2020-10-27 01:13:45,327 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 491 transitions. Word has length 75 [2020-10-27 01:13:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:45,327 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 491 transitions. [2020-10-27 01:13:45,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 01:13:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 491 transitions. [2020-10-27 01:13:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 01:13:45,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:45,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:13:45,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 01:13:45,329 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:45,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:45,329 INFO L82 PathProgramCache]: Analyzing trace with hash 437126490, now seen corresponding path program 1 times [2020-10-27 01:13:45,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:45,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580329627] [2020-10-27 01:13:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:46,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:46,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 01:13:46,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:46,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-27 01:13:46,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 01:13:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:13:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 01:13:46,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0