/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:23:58,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:23:58,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:23:58,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:23:58,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:23:58,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:23:58,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:23:58,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:23:58,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:23:58,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:23:58,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:23:58,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:23:58,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:23:58,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:23:58,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:23:58,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:23:58,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:23:58,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:23:58,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:23:58,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:23:58,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:23:58,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:23:58,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:23:58,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:23:58,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:23:58,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:23:58,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:23:58,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:23:58,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:23:58,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:23:58,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:23:58,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:23:58,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:23:58,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:23:58,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:23:58,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:23:58,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:23:58,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:23:58,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:23:58,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:23:58,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:23:58,836 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 [2020-10-26 21:23:58,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:23:58,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:23:58,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:23:58,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:23:58,919 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:23:58,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:23:58,919 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:23:58,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:23:58,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:23:58,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:23:58,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:23:58,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:23:58,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:23:58,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:23:58,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:23:58,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:23:58,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:23:58,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:23:58,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:23:58,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:23:58,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:23:58,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:23:58,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:23:58,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:23:58,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:23:58,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:23:58,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:23:58,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:23:58,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:23:58,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:23:59,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:23:59,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:23:59,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:23:59,465 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:23:59,466 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:23:59,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label48.c [2020-10-26 21:23:59,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17bdc0082/3e150f8ec5a04fc5a0268f3de1177e96/FLAG7a0fec5ee [2020-10-26 21:24:00,706 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:24:00,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label48.c [2020-10-26 21:24:00,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17bdc0082/3e150f8ec5a04fc5a0268f3de1177e96/FLAG7a0fec5ee [2020-10-26 21:24:00,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17bdc0082/3e150f8ec5a04fc5a0268f3de1177e96 [2020-10-26 21:24:00,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:24:00,938 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:24:00,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:24:00,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:24:00,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:24:00,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:24:00" (1/1) ... [2020-10-26 21:24:00,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f7574b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:00, skipping insertion in model container [2020-10-26 21:24:00,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:24:00" (1/1) ... [2020-10-26 21:24:00,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:24:01,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:24:03,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:24:03,798 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:24:05,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:24:05,302 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:24:05,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:05 WrapperNode [2020-10-26 21:24:05,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:24:05,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:24:05,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:24:05,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:24:05,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:05" (1/1) ... [2020-10-26 21:24:05,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:05" (1/1) ... [2020-10-26 21:24:05,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:05" (1/1) ... [2020-10-26 21:24:05,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:05" (1/1) ... [2020-10-26 21:24:05,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:05" (1/1) ... [2020-10-26 21:24:05,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:05" (1/1) ... [2020-10-26 21:24:05,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:05" (1/1) ... [2020-10-26 21:24:05,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:24:05,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:24:05,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:24:05,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:24:05,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:05" (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 [2020-10-26 21:24:06,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:24:06,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:24:06,089 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:24:06,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:24:06,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:24:06,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:24:06,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:24:06,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:24:06,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-26 21:24:06,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-26 21:24:06,091 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-26 21:24:06,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:24:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:24:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:24:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:24:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:24:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:24:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-26 21:24:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-26 21:24:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-26 21:24:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:24:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:24:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:24:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:24:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:24:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:24:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:24:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:24:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:24:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:24:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:24:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:24:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:24:16,811 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:24:16,812 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:24:16,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:24:16 BoogieIcfgContainer [2020-10-26 21:24:16,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:24:16,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:24:16,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:24:16,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:24:16,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:24:00" (1/3) ... [2020-10-26 21:24:16,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b3d282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:24:16, skipping insertion in model container [2020-10-26 21:24:16,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:05" (2/3) ... [2020-10-26 21:24:16,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b3d282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:24:16, skipping insertion in model container [2020-10-26 21:24:16,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:24:16" (3/3) ... [2020-10-26 21:24:16,832 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48.c [2020-10-26 21:24:16,847 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:24:16,860 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:24:16,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:24:16,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:24:16,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:24:16,934 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:24:16,934 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:24:16,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:24:16,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:24:16,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:24:16,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:24:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-26 21:24:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1663 [2020-10-26 21:24:17,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:24:17,147 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] [2020-10-26 21:24:17,148 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:24:17,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:24:17,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1839008065, now seen corresponding path program 1 times [2020-10-26 21:24:17,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:24:17,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459608631] [2020-10-26 21:24:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:24:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:23,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:23,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1686 [2020-10-26 21:24:23,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:24:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5318 [2020-10-26 21:24:23,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 21:24:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:24:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1677 [2020-10-26 21:24:23,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 21:24:25,694 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-26 21:24:25,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:24:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:25,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:25,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:25,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:24:25,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:24:25,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 21:24:25,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:25,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:24:25,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:24:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:24:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:24:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:24:28,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459608631] [2020-10-26 21:24:28,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:24:28,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:24:28,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82476126] [2020-10-26 21:24:28,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:24:28,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:24:28,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:24:28,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:24:28,510 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-26 21:24:28,715 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 21:24:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:24:48,614 INFO L93 Difference]: Finished difference Result 6365 states and 11967 transitions. [2020-10-26 21:24:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:24:48,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1662 [2020-10-26 21:24:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:24:48,677 INFO L225 Difference]: With dead ends: 6365 [2020-10-26 21:24:48,677 INFO L226 Difference]: Without dead ends: 4075 [2020-10-26 21:24:48,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:24:48,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-26 21:24:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005. [2020-10-26 21:24:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-26 21:24:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions. [2020-10-26 21:24:48,987 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1662 [2020-10-26 21:24:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:24:48,995 INFO L481 AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions. [2020-10-26 21:24:48,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:24:48,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions. [2020-10-26 21:24:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1674 [2020-10-26 21:24:49,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:24:49,302 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-26 21:24:49,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:24:49,304 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:24:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:24:49,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1553525175, now seen corresponding path program 1 times [2020-10-26 21:24:49,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:24:49,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963228200] [2020-10-26 21:24:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:24:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:50,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:54,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:54,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1699 [2020-10-26 21:24:54,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:24:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-26 21:24:54,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:24:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:24:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:24:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:24:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:24:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:55,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:55,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:24:55,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:24:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 21:24:55,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:24:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:24:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:24:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:24:55,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:24:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:55,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:55,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:24:55,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:24:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 21:24:55,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:55,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:24:55,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:24:55,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:24:55,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:24:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:24:57,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963228200] [2020-10-26 21:24:57,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:24:57,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:24:57,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743744401] [2020-10-26 21:24:57,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:24:57,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:24:57,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:24:57,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:24:57,256 INFO L87 Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 7 states. [2020-10-26 21:25:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:25:25,655 INFO L93 Difference]: Finished difference Result 11895 states and 19419 transitions. [2020-10-26 21:25:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 21:25:25,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1673 [2020-10-26 21:25:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:25:25,717 INFO L225 Difference]: With dead ends: 11895 [2020-10-26 21:25:25,717 INFO L226 Difference]: Without dead ends: 7896 [2020-10-26 21:25:25,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:25:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7896 states. [2020-10-26 21:25:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7896 to 7682. [2020-10-26 21:25:26,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7682 states. [2020-10-26 21:25:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7682 states to 7682 states and 10675 transitions. [2020-10-26 21:25:26,043 INFO L78 Accepts]: Start accepts. Automaton has 7682 states and 10675 transitions. Word has length 1673 [2020-10-26 21:25:26,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:25:26,044 INFO L481 AbstractCegarLoop]: Abstraction has 7682 states and 10675 transitions. [2020-10-26 21:25:26,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:25:26,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7682 states and 10675 transitions. [2020-10-26 21:25:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1685 [2020-10-26 21:25:26,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:25:26,104 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] [2020-10-26 21:25:26,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:25:26,104 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:25:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:25:26,106 INFO L82 PathProgramCache]: Analyzing trace with hash 328844672, now seen corresponding path program 1 times [2020-10-26 21:25:26,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:25:26,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693257998] [2020-10-26 21:25:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:25:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:25:26,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:25:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:25:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:25:31,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:25:31,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1710 [2020-10-26 21:25:31,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:25:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-26 21:25:31,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:25:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:25:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:25:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 21:25:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:25:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:25:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:25:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:25:32,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:25:32,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:25:32,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:25:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:25:32,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:25:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:25:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:25:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:25:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:25:32,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:25:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:25:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:25:32,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:25:32,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:25:32,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:25:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 21:25:32,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:25:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:25:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:25:32,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:25:32,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:25:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:25:34,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693257998] [2020-10-26 21:25:34,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:25:34,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:25:34,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134335770] [2020-10-26 21:25:34,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:25:34,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:25:34,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:25:34,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:25:34,108 INFO L87 Difference]: Start difference. First operand 7682 states and 10675 transitions. Second operand 7 states. [2020-10-26 21:26:03,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:26:03,774 INFO L93 Difference]: Finished difference Result 23211 states and 32907 transitions. [2020-10-26 21:26:03,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:26:03,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1684 [2020-10-26 21:26:03,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:26:03,860 INFO L225 Difference]: With dead ends: 23211 [2020-10-26 21:26:03,860 INFO L226 Difference]: Without dead ends: 15535 [2020-10-26 21:26:03,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:26:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15535 states. [2020-10-26 21:26:04,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15535 to 15267. [2020-10-26 21:26:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15267 states. [2020-10-26 21:26:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15267 states to 15267 states and 20019 transitions. [2020-10-26 21:26:04,319 INFO L78 Accepts]: Start accepts. Automaton has 15267 states and 20019 transitions. Word has length 1684 [2020-10-26 21:26:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:26:04,320 INFO L481 AbstractCegarLoop]: Abstraction has 15267 states and 20019 transitions. [2020-10-26 21:26:04,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:26:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 15267 states and 20019 transitions. [2020-10-26 21:26:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1695 [2020-10-26 21:26:04,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:26:04,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-26 21:26:04,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:26:04,388 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:26:04,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:26:04,393 INFO L82 PathProgramCache]: Analyzing trace with hash -222092987, now seen corresponding path program 1 times [2020-10-26 21:26:04,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:26:04,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392085946] [2020-10-26 21:26:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:26:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:26:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:26:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:26:09,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:26:09,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1720 [2020-10-26 21:26:09,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:26:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-26 21:26:09,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:26:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:26:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:26:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 21:26:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:26:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:26:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:26:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:26:10,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:26:10,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:26:10,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:26:10,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 21:26:10,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:26:10,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:26:10,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:26:10,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:26:10,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:26:10,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:26:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:26:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:26:10,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:26:10,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 21:26:10,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:26:10,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 21:26:10,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:26:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:26:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:26:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 21:26:10,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:26:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:26:11,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392085946] [2020-10-26 21:26:11,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:26:11,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:26:11,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427474682] [2020-10-26 21:26:11,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:26:11,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:26:11,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:26:11,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:26:11,854 INFO L87 Difference]: Start difference. First operand 15267 states and 20019 transitions. Second operand 7 states. [2020-10-26 21:26:39,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:26:39,612 INFO L93 Difference]: Finished difference Result 45516 states and 61545 transitions. [2020-10-26 21:26:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:26:39,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1694 [2020-10-26 21:26:39,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:26:39,716 INFO L225 Difference]: With dead ends: 45516 [2020-10-26 21:26:39,716 INFO L226 Difference]: Without dead ends: 30255 [2020-10-26 21:26:39,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:26:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30255 states. [2020-10-26 21:26:40,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30255 to 30152. [2020-10-26 21:26:40,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30152 states. [2020-10-26 21:26:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30152 states to 30152 states and 38798 transitions. [2020-10-26 21:26:40,450 INFO L78 Accepts]: Start accepts. Automaton has 30152 states and 38798 transitions. Word has length 1694 [2020-10-26 21:26:40,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:26:40,450 INFO L481 AbstractCegarLoop]: Abstraction has 30152 states and 38798 transitions. [2020-10-26 21:26:40,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:26:40,450 INFO L276 IsEmpty]: Start isEmpty. Operand 30152 states and 38798 transitions. [2020-10-26 21:26:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1776 [2020-10-26 21:26:40,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:26:40,563 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, 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, 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, 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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] [2020-10-26 21:26:40,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:26:40,564 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:26:40,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:26:40,565 INFO L82 PathProgramCache]: Analyzing trace with hash 71965701, now seen corresponding path program 1 times [2020-10-26 21:26:40,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:26:40,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898836279] [2020-10-26 21:26:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:26:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:26:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:26:42,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:26:46,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:26:46,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1801 [2020-10-26 21:26:46,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:26:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-26 21:26:46,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:26:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 21:26:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:26:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1792 [2020-10-26 21:26:46,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:26:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:26:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:26:47,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:26:47,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:26:47,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:26:47,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:26:47,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:26:47,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:26:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:26:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:26:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:26:47,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:26:47,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:26:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:26:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:26:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:26:47,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:26:47,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:26:47,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:26:47,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 21:26:47,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:26:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:26:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:26:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 21:26:47,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:26:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 21:26:50,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898836279] [2020-10-26 21:26:50,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:26:50,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 21:26:50,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101938055] [2020-10-26 21:26:50,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 21:26:50,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:26:50,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 21:26:50,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:26:50,552 INFO L87 Difference]: Start difference. First operand 30152 states and 38798 transitions. Second operand 6 states. [2020-10-26 21:27:18,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:27:18,360 INFO L93 Difference]: Finished difference Result 89615 states and 119609 transitions. [2020-10-26 21:27:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 21:27:18,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1775 [2020-10-26 21:27:18,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:27:18,572 INFO L225 Difference]: With dead ends: 89615 [2020-10-26 21:27:18,572 INFO L226 Difference]: Without dead ends: 59469 [2020-10-26 21:27:18,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:27:18,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59469 states. [2020-10-26 21:27:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59469 to 54059. [2020-10-26 21:27:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54059 states. [2020-10-26 21:27:19,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54059 states to 54059 states and 69038 transitions. [2020-10-26 21:27:19,896 INFO L78 Accepts]: Start accepts. Automaton has 54059 states and 69038 transitions. Word has length 1775 [2020-10-26 21:27:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:27:19,898 INFO L481 AbstractCegarLoop]: Abstraction has 54059 states and 69038 transitions. [2020-10-26 21:27:19,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 21:27:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 54059 states and 69038 transitions. [2020-10-26 21:27:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1810 [2020-10-26 21:27:20,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:27:20,471 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2020-10-26 21:27:20,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:27:20,475 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:27:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:27:20,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1998963134, now seen corresponding path program 1 times [2020-10-26 21:27:20,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:27:20,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134842209] [2020-10-26 21:27:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:27:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:27:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:21,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:23,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:25,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:27:25,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1839 [2020-10-26 21:27:25,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:27:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 21:27:25,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:27:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:27:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:27:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 21:27:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:27:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:27:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:27:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:26,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:27:26,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:27:26,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:27:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 21:27:26,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:27:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:27:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:27:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:27:26,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:27:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:27:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:27:26,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:26,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:27:26,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:27:26,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:27:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-26 21:27:26,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:27:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:27:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:27:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 21:27:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:27:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-26 21:27:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:27:26,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:26,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:26,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:27:26,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:27:26,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:27:26,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 21:27:26,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:27:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:27:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:27:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:27:26,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:27:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-26 21:27:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:27:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:27:26,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:27:26,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-26 21:27:26,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:27:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 21:27:26,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:27:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:27:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:27:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-26 21:27:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:27:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 21:27:28,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134842209] [2020-10-26 21:27:28,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:27:28,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:27:28,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088133942] [2020-10-26 21:27:28,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:27:28,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:27:28,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:27:28,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:27:28,679 INFO L87 Difference]: Start difference. First operand 54059 states and 69038 transitions. Second operand 8 states.