/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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:20:11,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:20:11,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:20:11,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:20:11,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:20:11,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:20:11,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:20:11,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:20:11,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:20:11,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:20:11,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:20:11,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:20:11,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:20:11,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:20:11,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:20:11,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:20:11,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:20:11,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:20:11,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:20:11,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:20:11,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:20:11,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:20:11,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:20:11,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:20:11,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:20:11,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:20:11,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:20:11,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:20:11,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:20:11,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:20:11,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:20:11,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:20:11,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:20:11,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:20:11,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:20:11,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:20:11,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:20:11,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:20:11,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:20:11,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:20:11,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:20:11,830 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 05:20:11,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:20:11,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:20:11,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:20:11,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:20:11,861 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:20:11,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:20:11,862 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:20:11,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:20:11,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:20:11,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:20:11,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:20:11,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:20:11,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:20:11,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:20:11,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:20:11,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:20:11,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:20:11,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:20:11,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:20:11,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:20:11,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:20:11,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:20:11,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:20:11,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:20:11,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:20:11,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:20:11,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:20:11,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:20:11,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:20:11,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:20:12,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:20:12,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:20:12,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:20:12,272 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:20:12,273 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:20:12,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label10.c [2020-10-29 05:20:12,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e135fce/dedeb34bdd444c83bdab7bd6ebdb8b79/FLAG615c60fa3 [2020-10-29 05:20:13,714 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:20:13,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label10.c [2020-10-29 05:20:13,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e135fce/dedeb34bdd444c83bdab7bd6ebdb8b79/FLAG615c60fa3 [2020-10-29 05:20:13,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e135fce/dedeb34bdd444c83bdab7bd6ebdb8b79 [2020-10-29 05:20:13,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:20:13,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:20:13,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:20:13,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:20:13,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:20:13,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:20:13" (1/1) ... [2020-10-29 05:20:13,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d606d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:13, skipping insertion in model container [2020-10-29 05:20:13,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:20:13" (1/1) ... [2020-10-29 05:20:13,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:20:14,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:20:16,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:20:16,461 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:20:17,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:20:17,813 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:20:17,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:17 WrapperNode [2020-10-29 05:20:17,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:20:17,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:20:17,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:20:17,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:20:17,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:17" (1/1) ... [2020-10-29 05:20:17,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:17" (1/1) ... [2020-10-29 05:20:17,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:17" (1/1) ... [2020-10-29 05:20:17,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:17" (1/1) ... [2020-10-29 05:20:18,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:17" (1/1) ... [2020-10-29 05:20:18,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:17" (1/1) ... [2020-10-29 05:20:18,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:17" (1/1) ... [2020-10-29 05:20:18,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:20:18,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:20:18,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:20:18,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:20:18,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:17" (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 05:20:18,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:20:18,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:20:18,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:20:18,458 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:20:18,458 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:20:18,458 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:20:18,459 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:20:18,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:20:18,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:20:18,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:20:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:20:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:20:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:20:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:20:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:20:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:20:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:20:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:20:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:20:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:20:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:20:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:20:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:20:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:20:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:20:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:20:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:20:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:20:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:20:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:20:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:20:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:20:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:20:29,163 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:20:29,164 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:20:29,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:20:29 BoogieIcfgContainer [2020-10-29 05:20:29,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:20:29,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:20:29,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:20:29,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:20:29,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:20:13" (1/3) ... [2020-10-29 05:20:29,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5e22ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:20:29, skipping insertion in model container [2020-10-29 05:20:29,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:17" (2/3) ... [2020-10-29 05:20:29,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5e22ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:20:29, skipping insertion in model container [2020-10-29 05:20:29,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:20:29" (3/3) ... [2020-10-29 05:20:29,179 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label10.c [2020-10-29 05:20:29,192 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:20:29,203 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:20:29,217 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:20:29,257 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:20:29,257 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:20:29,257 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:20:29,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:20:29,258 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:20:29,258 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:20:29,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:20:29,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:20:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:20:29,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2020-10-29 05:20:29,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:20:29,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:29,463 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:20:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:20:29,478 INFO L82 PathProgramCache]: Analyzing trace with hash -296581097, now seen corresponding path program 1 times [2020-10-29 05:20:29,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:20:29,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289470236] [2020-10-29 05:20:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:20:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:35,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:35,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1724 [2020-10-29 05:20:35,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:35,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5275 [2020-10-29 05:20:35,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:35,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:20:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:20:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1715 [2020-10-29 05:20:35,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:20:37,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:20:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:37,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:37,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:20:37,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:20:37,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:37,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:20:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:20:37,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:20:40,703 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 05:20:40,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289470236] [2020-10-29 05:20:40,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:20:40,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:20:40,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679160657] [2020-10-29 05:20:40,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:20:40,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:20:40,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:20:40,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:20:40,735 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:21:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:21:01,219 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-29 05:21:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:21:01,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1700 [2020-10-29 05:21:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:21:01,288 INFO L225 Difference]: With dead ends: 6315 [2020-10-29 05:21:01,288 INFO L226 Difference]: Without dead ends: 4025 [2020-10-29 05:21:01,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:21:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-29 05:21:01,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-29 05:21:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-29 05:21:01,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-29 05:21:01,554 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1700 [2020-10-29 05:21:01,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:21:01,561 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-29 05:21:01,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:21:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-29 05:21:01,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2020-10-29 05:21:01,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:21:01,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:01,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:21:01,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:21:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:21:01,750 INFO L82 PathProgramCache]: Analyzing trace with hash -905514989, now seen corresponding path program 1 times [2020-10-29 05:21:01,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:21:01,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861996789] [2020-10-29 05:21:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:21:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:07,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:07,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1735 [2020-10-29 05:21:07,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:21:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-29 05:21:07,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:07,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:07,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:21:07,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:21:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1712 [2020-10-29 05:21:07,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:21:08,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:21:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:08,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:08,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:21:08,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:21:08,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:08,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:21:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:21:08,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:08,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:21:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:08,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:08,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:21:08,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:21:08,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:08,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:21:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:21:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:21:11,306 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 05:21:11,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861996789] [2020-10-29 05:21:11,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:21:11,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:21:11,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398195424] [2020-10-29 05:21:11,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:21:11,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:21:11,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:21:11,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:21:11,321 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 5 states. [2020-10-29 05:21:34,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:21:34,046 INFO L93 Difference]: Finished difference Result 11577 states and 18835 transitions. [2020-10-29 05:21:34,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:21:34,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1709 [2020-10-29 05:21:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:21:34,092 INFO L225 Difference]: With dead ends: 11577 [2020-10-29 05:21:34,092 INFO L226 Difference]: Without dead ends: 7585 [2020-10-29 05:21:34,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:21:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7585 states. [2020-10-29 05:21:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7585 to 7538. [2020-10-29 05:21:34,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7538 states. [2020-10-29 05:21:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7538 states to 7538 states and 10590 transitions. [2020-10-29 05:21:34,304 INFO L78 Accepts]: Start accepts. Automaton has 7538 states and 10590 transitions. Word has length 1709 [2020-10-29 05:21:34,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:21:34,307 INFO L481 AbstractCegarLoop]: Abstraction has 7538 states and 10590 transitions. [2020-10-29 05:21:34,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:21:34,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7538 states and 10590 transitions. [2020-10-29 05:21:34,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2020-10-29 05:21:34,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:21:34,365 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-29 05:21:34,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:21:34,366 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:21:34,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:21:34,367 INFO L82 PathProgramCache]: Analyzing trace with hash 555644553, now seen corresponding path program 1 times [2020-10-29 05:21:34,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:21:34,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562654407] [2020-10-29 05:21:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:21:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:36,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:39,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:39,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1741 [2020-10-29 05:21:39,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:21:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 05:21:39,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:39,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:21:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 05:21:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1713 [2020-10-29 05:21:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:21:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:40,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:40,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:40,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:21:40,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:40,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:21:40,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:40,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:21:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:21:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:21:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:40,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:40,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:40,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:21:40,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:40,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:21:40,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:40,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:21:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:21:40,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:21:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:21:43,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562654407] [2020-10-29 05:21:43,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:21:43,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:21:43,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157261508] [2020-10-29 05:21:43,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:21:43,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:21:43,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:21:43,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:21:43,637 INFO L87 Difference]: Start difference. First operand 7538 states and 10590 transitions. Second operand 6 states. [2020-10-29 05:22:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:22:19,095 INFO L93 Difference]: Finished difference Result 22180 states and 33277 transitions. [2020-10-29 05:22:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:22:19,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1715 [2020-10-29 05:22:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:22:19,201 INFO L225 Difference]: With dead ends: 22180 [2020-10-29 05:22:19,201 INFO L226 Difference]: Without dead ends: 14648 [2020-10-29 05:22:19,224 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 05:22:19,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14648 states. [2020-10-29 05:22:19,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14648 to 14617. [2020-10-29 05:22:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14617 states. [2020-10-29 05:22:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14617 states to 14617 states and 19596 transitions. [2020-10-29 05:22:19,660 INFO L78 Accepts]: Start accepts. Automaton has 14617 states and 19596 transitions. Word has length 1715 [2020-10-29 05:22:19,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:22:19,664 INFO L481 AbstractCegarLoop]: Abstraction has 14617 states and 19596 transitions. [2020-10-29 05:22:19,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:22:19,664 INFO L276 IsEmpty]: Start isEmpty. Operand 14617 states and 19596 transitions. [2020-10-29 05:22:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2020-10-29 05:22:19,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:22:19,750 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-29 05:22:19,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:22:19,750 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:22:19,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:22:19,751 INFO L82 PathProgramCache]: Analyzing trace with hash 666451480, now seen corresponding path program 1 times [2020-10-29 05:22:19,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:22:19,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795865267] [2020-10-29 05:22:19,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:22:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:20,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:21,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:25,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:25,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1748 [2020-10-29 05:22:25,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:22:25,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 05:22:25,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:25,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:22:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:22:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1712 [2020-10-29 05:22:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:22:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:26,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:26,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:22:26,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:26,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:22:26,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:26,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:22:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:22:26,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:22:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:26,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:26,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:26,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 05:22:26,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:22:26,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:26,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:22:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:22:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:22:28,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795865267] [2020-10-29 05:22:28,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:22:28,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:22:28,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647066476] [2020-10-29 05:22:28,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:22:28,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:22:28,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:22:28,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:22:28,740 INFO L87 Difference]: Start difference. First operand 14617 states and 19596 transitions. Second operand 5 states. [2020-10-29 05:22:52,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:22:52,429 INFO L93 Difference]: Finished difference Result 32772 states and 45426 transitions. [2020-10-29 05:22:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:22:52,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1722 [2020-10-29 05:22:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:22:52,505 INFO L225 Difference]: With dead ends: 32772 [2020-10-29 05:22:52,506 INFO L226 Difference]: Without dead ends: 18161 [2020-10-29 05:22:52,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:22:52,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18161 states. [2020-10-29 05:22:52,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18161 to 18133. [2020-10-29 05:22:52,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18133 states. [2020-10-29 05:22:53,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18133 states to 18133 states and 23834 transitions. [2020-10-29 05:22:53,001 INFO L78 Accepts]: Start accepts. Automaton has 18133 states and 23834 transitions. Word has length 1722 [2020-10-29 05:22:53,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:22:53,005 INFO L481 AbstractCegarLoop]: Abstraction has 18133 states and 23834 transitions. [2020-10-29 05:22:53,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:22:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 18133 states and 23834 transitions. [2020-10-29 05:22:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2020-10-29 05:22:53,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:22:53,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-29 05:22:53,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:22:53,090 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:22:53,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:22:53,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1307232401, now seen corresponding path program 1 times [2020-10-29 05:22:53,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:22:53,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117303292] [2020-10-29 05:22:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:22:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:53,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:53,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:58,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:58,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1764 [2020-10-29 05:22:58,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:22:58,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 05:22:58,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:58,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:22:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 05:22:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1713 [2020-10-29 05:22:58,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:59,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:22:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:59,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:59,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:22:59,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:22:59,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:59,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:22:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:22:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:59,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:22:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:59,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:59,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:59,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:22:59,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:59,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 05:22:59,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:59,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:22:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 05:22:59,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:23:02,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117303292] [2020-10-29 05:23:02,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:23:02,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:23:02,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825941447] [2020-10-29 05:23:02,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:23:02,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:23:02,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:23:02,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:23:02,579 INFO L87 Difference]: Start difference. First operand 18133 states and 23834 transitions. Second operand 6 states. [2020-10-29 05:23:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:23:39,316 INFO L93 Difference]: Finished difference Result 71451 states and 97538 transitions. [2020-10-29 05:23:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:23:39,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1738 [2020-10-29 05:23:39,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:23:39,542 INFO L225 Difference]: With dead ends: 71451 [2020-10-29 05:23:39,542 INFO L226 Difference]: Without dead ends: 53324 [2020-10-29 05:23:39,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:23:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53324 states. [2020-10-29 05:23:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53324 to 53256. [2020-10-29 05:23:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53256 states. [2020-10-29 05:23:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53256 states to 53256 states and 67490 transitions. [2020-10-29 05:23:41,003 INFO L78 Accepts]: Start accepts. Automaton has 53256 states and 67490 transitions. Word has length 1738 [2020-10-29 05:23:41,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:23:41,006 INFO L481 AbstractCegarLoop]: Abstraction has 53256 states and 67490 transitions. [2020-10-29 05:23:41,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:23:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 53256 states and 67490 transitions. [2020-10-29 05:23:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1741 [2020-10-29 05:23:41,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:23:41,178 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:23:41,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:23:41,179 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:23:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:23:41,180 INFO L82 PathProgramCache]: Analyzing trace with hash -594679388, now seen corresponding path program 1 times [2020-10-29 05:23:41,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:23:41,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915099345] [2020-10-29 05:23:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:23:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:41,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:46,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:46,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1768 [2020-10-29 05:23:46,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:23:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-29 05:23:46,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:46,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 05:23:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:23:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1306 [2020-10-29 05:23:46,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:49,161 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33