/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:31:11,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:31:11,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:31:11,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:31:11,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:31:11,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:31:11,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:31:11,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:31:11,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:31:11,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:31:11,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:31:11,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:31:11,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:31:11,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:31:11,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:31:11,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:31:11,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:31:11,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:31:11,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:31:11,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:31:11,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:31:11,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:31:11,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:31:11,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:31:11,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:31:11,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:31:11,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:31:11,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:31:11,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:31:11,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:31:11,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:31:11,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:31:11,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:31:11,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:31:11,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:31:11,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:31:11,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:31:11,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:31:11,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:31:11,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:31:11,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:31:11,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:31:11,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:31:11,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:31:11,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:31:11,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:31:11,744 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:31:11,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:31:11,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:31:11,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:31:11,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:31:11,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:31:11,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:31:11,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:31:11,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:31:11,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:31:11,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:31:11,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:31:11,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:31:11,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:31:11,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:31:11,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:31:11,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:31:11,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:31:11,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:31:11,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:31:11,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:31:11,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:31:11,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:31:11,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:31:11,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:31:11,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:31:12,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:31:12,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:31:12,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:31:12,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:31:12,314 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:31:12,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label51.c [2020-10-29 05:31:12,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70c1872be/4ce7b23a74bc4337944be44e1b026a4a/FLAGcf4336268 [2020-10-29 05:31:13,792 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:31:13,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label51.c [2020-10-29 05:31:13,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70c1872be/4ce7b23a74bc4337944be44e1b026a4a/FLAGcf4336268 [2020-10-29 05:31:13,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70c1872be/4ce7b23a74bc4337944be44e1b026a4a [2020-10-29 05:31:13,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:31:13,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:31:13,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:31:13,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:31:13,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:31:13,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:31:13" (1/1) ... [2020-10-29 05:31:13,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a79778e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:13, skipping insertion in model container [2020-10-29 05:31:13,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:31:13" (1/1) ... [2020-10-29 05:31:13,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:31:14,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:31:16,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:31:16,993 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:31:18,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:31:18,700 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:31:18,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:18 WrapperNode [2020-10-29 05:31:18,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:31:18,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:31:18,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:31:18,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:31:18,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:18" (1/1) ... [2020-10-29 05:31:18,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:18" (1/1) ... [2020-10-29 05:31:18,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:18" (1/1) ... [2020-10-29 05:31:18,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:18" (1/1) ... [2020-10-29 05:31:19,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:18" (1/1) ... [2020-10-29 05:31:19,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:18" (1/1) ... [2020-10-29 05:31:19,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:18" (1/1) ... [2020-10-29 05:31:19,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:31:19,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:31:19,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:31:19,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:31:19,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:31:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:31:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:31:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:31:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:31:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:31:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:31:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:31:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:31:19,463 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:31:19,463 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:31:19,463 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:31:19,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:31:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:31:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:31:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:31:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:31:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:31:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:31:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:31:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:31:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:31:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:31:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:31:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:31:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:31:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:31:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:31:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:31:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:31:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:31:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:31:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:31:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:31:29,844 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:31:29,845 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:31:29,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:31:29 BoogieIcfgContainer [2020-10-29 05:31:29,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:31:29,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:31:29,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:31:29,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:31:29,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:31:13" (1/3) ... [2020-10-29 05:31:29,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f838f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:31:29, skipping insertion in model container [2020-10-29 05:31:29,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:31:18" (2/3) ... [2020-10-29 05:31:29,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f838f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:31:29, skipping insertion in model container [2020-10-29 05:31:29,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:31:29" (3/3) ... [2020-10-29 05:31:29,860 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label51.c [2020-10-29 05:31:29,873 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:31:29,880 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:31:29,894 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:31:29,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:31:29,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:31:29,934 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:31:29,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:31:29,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:31:29,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:31:29,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:31:29,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:31:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:31:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2020-10-29 05:31:30,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:31:30,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:31:30,138 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:31:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:31:30,155 INFO L82 PathProgramCache]: Analyzing trace with hash -908930441, now seen corresponding path program 1 times [2020-10-29 05:31:30,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:31:30,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101482872] [2020-10-29 05:31:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:31:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:36,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:36,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1684 [2020-10-29 05:31:36,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5286 [2020-10-29 05:31:36,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:36,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:31:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:31:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1675 [2020-10-29 05:31:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:31:38,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:31:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:31:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:31:38,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:31:38,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:31:38,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:31:38,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:31:38,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:31:38,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:31:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:31:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:31:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:31:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:31:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:31:41,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101482872] [2020-10-29 05:31:41,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:31:41,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:31:41,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820293336] [2020-10-29 05:31:41,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:31:41,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:31:41,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:31:41,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:31:41,180 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:32:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:32:05,371 INFO L93 Difference]: Finished difference Result 6314 states and 11856 transitions. [2020-10-29 05:32:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:32:05,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1660 [2020-10-29 05:32:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:32:05,422 INFO L225 Difference]: With dead ends: 6314 [2020-10-29 05:32:05,423 INFO L226 Difference]: Without dead ends: 4024 [2020-10-29 05:32:05,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:32:05,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-29 05:32:05,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4009. [2020-10-29 05:32:05,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4009 states. [2020-10-29 05:32:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 6272 transitions. [2020-10-29 05:32:05,700 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 6272 transitions. Word has length 1660 [2020-10-29 05:32:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:32:05,705 INFO L481 AbstractCegarLoop]: Abstraction has 4009 states and 6272 transitions. [2020-10-29 05:32:05,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:32:05,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 6272 transitions. [2020-10-29 05:32:05,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1670 [2020-10-29 05:32:05,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:32:05,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:32:05,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:32:05,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:32:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:32:05,820 INFO L82 PathProgramCache]: Analyzing trace with hash -508828045, now seen corresponding path program 1 times [2020-10-29 05:32:05,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:32:05,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269591539] [2020-10-29 05:32:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:32:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:11,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:11,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1695 [2020-10-29 05:32:11,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:32:11,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-29 05:32:11,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:11,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:32:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:32:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1672 [2020-10-29 05:32:11,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:32:12,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:32:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:12,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:12,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:32:12,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:32:12,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:32:12,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:12,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:32:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:32:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:32:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:32:12,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:32:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:12,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:32:12,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:32:12,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:32:12,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:32:12,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:32:12,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:32:12,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:32:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:32:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:32:12,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:32:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:32:15,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269591539] [2020-10-29 05:32:15,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:32:15,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:32:15,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505330958] [2020-10-29 05:32:15,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:32:15,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:32:15,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:32:15,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:32:15,748 INFO L87 Difference]: Start difference. First operand 4009 states and 6272 transitions. Second operand 6 states. [2020-10-29 05:32:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:32:54,310 INFO L93 Difference]: Finished difference Result 15128 states and 24068 transitions. [2020-10-29 05:32:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:32:54,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1669 [2020-10-29 05:32:54,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:32:54,372 INFO L225 Difference]: With dead ends: 15128 [2020-10-29 05:32:54,372 INFO L226 Difference]: Without dead ends: 11125 [2020-10-29 05:32:54,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:32:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11125 states. [2020-10-29 05:32:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11125 to 11112. [2020-10-29 05:32:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11112 states. [2020-10-29 05:32:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11112 states to 11112 states and 15638 transitions. [2020-10-29 05:32:54,772 INFO L78 Accepts]: Start accepts. Automaton has 11112 states and 15638 transitions. Word has length 1669 [2020-10-29 05:32:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:32:54,776 INFO L481 AbstractCegarLoop]: Abstraction has 11112 states and 15638 transitions. [2020-10-29 05:32:54,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:32:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 11112 states and 15638 transitions. [2020-10-29 05:32:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2020-10-29 05:32:54,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:32:54,837 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:32:54,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:32:54,838 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:32:54,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:32:54,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1883677189, now seen corresponding path program 1 times [2020-10-29 05:32:54,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:32:54,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254535744] [2020-10-29 05:32:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:32:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:32:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:55,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:32:57,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:00,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:00,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1741 [2020-10-29 05:33:00,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:33:00,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-29 05:33:00,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:00,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:33:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 05:33:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1244 [2020-10-29 05:33:00,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:05,317 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-29 05:33:05,435 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-29 05:33:05,570 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:33:05,702 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:33:05,848 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:33:06,000 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:33:06,151 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:33:06,312 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:33:06,465 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-29 05:33:06,655 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-29 05:33:06,856 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-10-29 05:33:07,050 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2020-10-29 05:33:07,222 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2020-10-29 05:33:07,387 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2020-10-29 05:33:07,562 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2020-10-29 05:33:07,773 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2020-10-29 05:33:08,012 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-10-29 05:33:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:33:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:08,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:33:08,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:33:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:08,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:33:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:33:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:08,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:33:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:08,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:08,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:33:08,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:33:08,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:08,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:33:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:33:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 05:33:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:08,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:08,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:33:08,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:08,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:33:08,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:08,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:08,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:33:08,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:08,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:33:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 05:33:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:08,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:08,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:08,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:33:08,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:08,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 05:33:08,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:08,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:08,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:33:08,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:08,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:33:08,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 05:33:32,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254535744] [2020-10-29 05:33:32,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:33:32,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:33:32,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33762560] [2020-10-29 05:33:32,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:33:32,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:33:32,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:33:32,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:33:32,314 INFO L87 Difference]: Start difference. First operand 11112 states and 15638 transitions. Second operand 23 states. [2020-10-29 05:33:33,581 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:33:33,833 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:33:35,723 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 05:33:43,881 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:33:44,164 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-29 05:33:54,152 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:33:54,395 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-29 05:34:04,242 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:34:04,505 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-29 05:34:06,520 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:34:07,210 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2020-10-29 05:34:08,310 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-10-29 05:34:09,286 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2020-10-29 05:34:15,689 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:34:15,929 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 05:34:25,985 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:34:26,246 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:34:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:34:42,080 INFO L93 Difference]: Finished difference Result 23501 states and 33838 transitions. [2020-10-29 05:34:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 05:34:42,084 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1711 [2020-10-29 05:34:42,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:34:42,163 INFO L225 Difference]: With dead ends: 23501 [2020-10-29 05:34:42,163 INFO L226 Difference]: Without dead ends: 12395 [2020-10-29 05:34:42,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 05:34:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12395 states. [2020-10-29 05:34:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12395 to 12385. [2020-10-29 05:34:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12385 states. [2020-10-29 05:34:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12385 states to 12385 states and 16930 transitions. [2020-10-29 05:34:42,541 INFO L78 Accepts]: Start accepts. Automaton has 12385 states and 16930 transitions. Word has length 1711 [2020-10-29 05:34:42,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:34:42,544 INFO L481 AbstractCegarLoop]: Abstraction has 12385 states and 16930 transitions. [2020-10-29 05:34:42,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:34:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 12385 states and 16930 transitions. [2020-10-29 05:34:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2020-10-29 05:34:42,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:34:42,602 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:34:42,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:34:42,603 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:34:42,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:34:42,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1215278820, now seen corresponding path program 1 times [2020-10-29 05:34:42,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:34:42,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729821705] [2020-10-29 05:34:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:34:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:47,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:47,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1741 [2020-10-29 05:34:47,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:34:47,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-29 05:34:47,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:47,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:34:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-29 05:34:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1673 [2020-10-29 05:34:47,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:34:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:48,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:48,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:48,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:34:48,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:34:48,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:48,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:34:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:34:48,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:48,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:34:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:48,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:49,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:49,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 05:34:49,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:34:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 05:34:49,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:49,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:34:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 05:34:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:34:52,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729821705] [2020-10-29 05:34:52,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:34:52,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:34:52,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871700566] [2020-10-29 05:34:52,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:34:52,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:34:52,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:34:52,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:34:52,134 INFO L87 Difference]: Start difference. First operand 12385 states and 16930 transitions. Second operand 5 states.