/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem16_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:15:56,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:15:56,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:15:56,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:15:56,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:15:56,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:15:56,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:15:56,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:15:56,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:15:56,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:15:56,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:15:56,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:15:56,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:15:56,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:15:56,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:15:56,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:15:56,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:15:56,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:15:56,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:15:56,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:15:56,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:15:56,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:15:56,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:15:56,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:15:56,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:15:56,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:15:56,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:15:56,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:15:56,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:15:56,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:15:56,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:15:56,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:15:56,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:15:56,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:15:56,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:15:56,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:15:56,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:15:56,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:15:56,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:15:56,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:15:56,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:15:56,889 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 [2020-10-28 13:15:56,936 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:15:56,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:15:56,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:15:56,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:15:56,939 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:15:56,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:15:56,939 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:15:56,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:15:56,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:15:56,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:15:56,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:15:56,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:15:56,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:15:56,941 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:15:56,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:15:56,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:15:56,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:15:56,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:15:56,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:15:56,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:15:56,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:15:56,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:15:56,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:15:56,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:15:56,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:15:56,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:15:56,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:15:56,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:15:56,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:15:56,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:15:57,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:15:57,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:15:57,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:15:57,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:15:57,404 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:15:57,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label07.c [2020-10-28 13:15:57,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7999e745b/6d63af4f05074a6795e5b9c7ae32e848/FLAGb7a4b2776 [2020-10-28 13:15:58,494 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:15:58,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label07.c [2020-10-28 13:15:58,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7999e745b/6d63af4f05074a6795e5b9c7ae32e848/FLAGb7a4b2776 [2020-10-28 13:15:58,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7999e745b/6d63af4f05074a6795e5b9c7ae32e848 [2020-10-28 13:15:58,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:15:58,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:15:58,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:15:58,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:15:58,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:15:58,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:15:58" (1/1) ... [2020-10-28 13:15:58,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c2cc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:58, skipping insertion in model container [2020-10-28 13:15:58,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:15:58" (1/1) ... [2020-10-28 13:15:58,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:15:58,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:15:59,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:15:59,450 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:15:59,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:15:59,757 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:15:59,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:59 WrapperNode [2020-10-28 13:15:59,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:15:59,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:15:59,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:15:59,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:15:59,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:59" (1/1) ... [2020-10-28 13:15:59,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:59" (1/1) ... [2020-10-28 13:15:59,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:59" (1/1) ... [2020-10-28 13:15:59,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:59" (1/1) ... [2020-10-28 13:15:59,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:59" (1/1) ... [2020-10-28 13:15:59,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:59" (1/1) ... [2020-10-28 13:15:59,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:59" (1/1) ... [2020-10-28 13:15:59,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:15:59,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:15:59,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:15:59,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:15:59,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:59" (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 [2020-10-28 13:16:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:16:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:16:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:16:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:16:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:16:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:16:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:16:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:16:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:16:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:16:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:16:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:16:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:16:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:16:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:16:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:16:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:16:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:16:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:16:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:16:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:16:02,616 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:16:02,617 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:16:02,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:16:02 BoogieIcfgContainer [2020-10-28 13:16:02,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:16:02,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:16:02,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:16:02,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:16:02,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:15:58" (1/3) ... [2020-10-28 13:16:02,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2c6715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:16:02, skipping insertion in model container [2020-10-28 13:16:02,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:59" (2/3) ... [2020-10-28 13:16:02,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2c6715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:16:02, skipping insertion in model container [2020-10-28 13:16:02,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:16:02" (3/3) ... [2020-10-28 13:16:02,631 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label07.c [2020-10-28 13:16:02,645 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:16:02,652 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:16:02,668 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:16:02,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:16:02,719 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:16:02,720 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:16:02,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:16:02,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:16:02,720 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:16:02,720 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:16:02,720 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:16:02,750 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:16:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 13:16:02,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:02,762 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] [2020-10-28 13:16:02,763 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:02,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:02,770 INFO L82 PathProgramCache]: Analyzing trace with hash 870452812, now seen corresponding path program 1 times [2020-10-28 13:16:02,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:02,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958003274] [2020-10-28 13:16:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:03,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:03,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:16:03,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-28 13:16:03,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:03,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:16:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:16:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 13:16:03,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:16:03,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:03,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:03,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:03,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:03,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:16:03,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:03,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:16:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:16:03,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958003274] [2020-10-28 13:16:03,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:16:03,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:16:03,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703622457] [2020-10-28 13:16:03,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:16:03,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:03,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:16:03,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:16:03,940 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:16:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:08,273 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-28 13:16:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:16:08,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-28 13:16:08,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:08,309 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:16:08,310 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:16:08,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:16:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:16:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-28 13:16:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-28 13:16:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-28 13:16:08,437 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 61 [2020-10-28 13:16:08,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:08,438 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-28 13:16:08,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:16:08,438 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-28 13:16:08,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 13:16:08,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:08,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:08,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:16:08,446 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:08,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:08,447 INFO L82 PathProgramCache]: Analyzing trace with hash 333782213, now seen corresponding path program 1 times [2020-10-28 13:16:08,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:08,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878771204] [2020-10-28 13:16:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:08,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:09,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:09,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 13:16:09,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:16:09,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1418 [2020-10-28 13:16:09,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:09,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:16:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:16:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:16:09,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:16:10,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:10,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:10,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:10,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:10,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:16:10,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:10,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:16:10,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:10,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:10,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:10,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:16:10,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:10,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 13:16:10,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:10,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:16:10,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:16:10,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878771204] [2020-10-28 13:16:10,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:16:10,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 13:16:10,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165949072] [2020-10-28 13:16:10,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:16:10,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:10,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:16:10,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:16:10,413 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 8 states. [2020-10-28 13:16:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:14,798 INFO L93 Difference]: Finished difference Result 1732 states and 2648 transitions. [2020-10-28 13:16:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:16:14,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-10-28 13:16:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:14,807 INFO L225 Difference]: With dead ends: 1732 [2020-10-28 13:16:14,807 INFO L226 Difference]: Without dead ends: 1048 [2020-10-28 13:16:14,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:16:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-10-28 13:16:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1040. [2020-10-28 13:16:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-10-28 13:16:14,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1424 transitions. [2020-10-28 13:16:14,878 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1424 transitions. Word has length 136 [2020-10-28 13:16:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:14,879 INFO L481 AbstractCegarLoop]: Abstraction has 1040 states and 1424 transitions. [2020-10-28 13:16:14,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:16:14,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1424 transitions. [2020-10-28 13:16:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 13:16:14,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:14,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:14,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:16:14,883 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:14,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:14,884 INFO L82 PathProgramCache]: Analyzing trace with hash -529738131, now seen corresponding path program 1 times [2020-10-28 13:16:14,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:14,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300594865] [2020-10-28 13:16:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:15,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:15,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 13:16:15,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:16:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-28 13:16:15,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:15,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:16:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:16:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:16:15,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:15,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:15,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:15,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:15,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:15,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:16:15,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:15,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:15,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:16:15,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:15,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:16,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:16,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:16:16,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 13:16:16,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:16,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:16:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:16:16,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300594865] [2020-10-28 13:16:16,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:16:16,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:16:16,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768548166] [2020-10-28 13:16:16,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:16,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:16,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:16,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:16,154 INFO L87 Difference]: Start difference. First operand 1040 states and 1424 transitions. Second operand 7 states. [2020-10-28 13:16:21,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:21,337 INFO L93 Difference]: Finished difference Result 3150 states and 4387 transitions. [2020-10-28 13:16:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:16:21,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-28 13:16:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:21,363 INFO L225 Difference]: With dead ends: 3150 [2020-10-28 13:16:21,364 INFO L226 Difference]: Without dead ends: 2116 [2020-10-28 13:16:21,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:16:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2020-10-28 13:16:21,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2082. [2020-10-28 13:16:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2082 states. [2020-10-28 13:16:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2616 transitions. [2020-10-28 13:16:21,476 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2616 transitions. Word has length 137 [2020-10-28 13:16:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:21,479 INFO L481 AbstractCegarLoop]: Abstraction has 2082 states and 2616 transitions. [2020-10-28 13:16:21,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2616 transitions. [2020-10-28 13:16:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 13:16:21,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:21,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:21,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:16:21,494 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:21,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2109507326, now seen corresponding path program 1 times [2020-10-28 13:16:21,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:21,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839702557] [2020-10-28 13:16:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:21,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:22,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:23,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:25,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:25,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:16:25,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:16:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4325 [2020-10-28 13:16:25,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:25,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:16:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:16:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:25,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:25,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:25,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:25,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:16:25,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:25,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:26,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:26,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:16:26,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:16:26,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:26,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:16:26,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:16:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:26,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:26,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:26,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:16:26,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:26,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:16:26,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:26,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:16:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:16:26,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839702557] [2020-10-28 13:16:26,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:26,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:26,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368573303] [2020-10-28 13:16:26,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:26,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:26,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:26,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:26,325 INFO L87 Difference]: Start difference. First operand 2082 states and 2616 transitions. Second operand 7 states. [2020-10-28 13:16:31,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:31,396 INFO L93 Difference]: Finished difference Result 4920 states and 6331 transitions. [2020-10-28 13:16:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:16:31,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-28 13:16:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:31,417 INFO L225 Difference]: With dead ends: 4920 [2020-10-28 13:16:31,418 INFO L226 Difference]: Without dead ends: 2844 [2020-10-28 13:16:31,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:16:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2020-10-28 13:16:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2810. [2020-10-28 13:16:31,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2810 states. [2020-10-28 13:16:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 3458 transitions. [2020-10-28 13:16:31,545 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 3458 transitions. Word has length 224 [2020-10-28 13:16:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:31,546 INFO L481 AbstractCegarLoop]: Abstraction has 2810 states and 3458 transitions. [2020-10-28 13:16:31,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:31,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 3458 transitions. [2020-10-28 13:16:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-28 13:16:31,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:31,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:31,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:16:31,552 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1916586596, now seen corresponding path program 1 times [2020-10-28 13:16:31,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:31,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769231295] [2020-10-28 13:16:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:31,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:33,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:33,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:35,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:35,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-28 13:16:35,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:16:35,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3586 [2020-10-28 13:16:35,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:35,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:16:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:16:35,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:35,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:35,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:35,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:35,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:35,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:35,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:16:35,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:35,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:16:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:35,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:35,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:16:35,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:35,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:16:35,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:35,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:35,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:35,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:35,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:16:35,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:35,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:16:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:35,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:35,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:16:35,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:16:35,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:35,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:16:35,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:16:35,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769231295] [2020-10-28 13:16:35,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:35,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:35,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986540659] [2020-10-28 13:16:35,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:35,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:35,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:35,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:35,716 INFO L87 Difference]: Start difference. First operand 2810 states and 3458 transitions. Second operand 7 states. [2020-10-28 13:16:40,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:40,422 INFO L93 Difference]: Finished difference Result 7034 states and 8828 transitions. [2020-10-28 13:16:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:16:40,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-28 13:16:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:40,446 INFO L225 Difference]: With dead ends: 7034 [2020-10-28 13:16:40,446 INFO L226 Difference]: Without dead ends: 3849 [2020-10-28 13:16:40,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:16:40,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2020-10-28 13:16:40,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 3479. [2020-10-28 13:16:40,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3479 states. [2020-10-28 13:16:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 3764 transitions. [2020-10-28 13:16:40,573 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 3764 transitions. Word has length 235 [2020-10-28 13:16:40,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:40,573 INFO L481 AbstractCegarLoop]: Abstraction has 3479 states and 3764 transitions. [2020-10-28 13:16:40,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:40,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 3764 transitions. [2020-10-28 13:16:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-28 13:16:40,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:40,583 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:40,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:16:40,583 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:40,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:40,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1443328543, now seen corresponding path program 1 times [2020-10-28 13:16:40,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:40,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168546925] [2020-10-28 13:16:40,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:45,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:45,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-28 13:16:45,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:16:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 13:16:45,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:45,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:16:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:16:45,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:45,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:45,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:45,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:45,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:16:45,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:45,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:45,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:45,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:45,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:16:45,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 13:16:45,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:45,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:16:45,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:45,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:16:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:46,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:46,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:16:46,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:46,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-28 13:16:46,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:46,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:16:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-28 13:16:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:46,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:46,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:16:46,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:16:46,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:46,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:16:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 260 proven. 114 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 13:16:46,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168546925] [2020-10-28 13:16:46,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:46,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:46,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643657510] [2020-10-28 13:16:46,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:46,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:46,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:46,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:46,869 INFO L87 Difference]: Start difference. First operand 3479 states and 3764 transitions. Second operand 7 states. [2020-10-28 13:16:50,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:50,680 INFO L93 Difference]: Finished difference Result 9020 states and 9869 transitions. [2020-10-28 13:16:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:16:50,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-28 13:16:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:50,713 INFO L225 Difference]: With dead ends: 9020 [2020-10-28 13:16:50,713 INFO L226 Difference]: Without dead ends: 5547 [2020-10-28 13:16:50,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:16:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2020-10-28 13:16:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 5178. [2020-10-28 13:16:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5178 states. [2020-10-28 13:16:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5178 states to 5178 states and 5538 transitions. [2020-10-28 13:16:50,892 INFO L78 Accepts]: Start accepts. Automaton has 5178 states and 5538 transitions. Word has length 405 [2020-10-28 13:16:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:50,893 INFO L481 AbstractCegarLoop]: Abstraction has 5178 states and 5538 transitions. [2020-10-28 13:16:50,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5178 states and 5538 transitions. [2020-10-28 13:16:50,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-28 13:16:50,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:50,907 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:50,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:16:50,908 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:50,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1710887331, now seen corresponding path program 1 times [2020-10-28 13:16:50,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:50,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882297666] [2020-10-28 13:16:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:51,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:51,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:53,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:56,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:56,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-28 13:16:56,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:16:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 13:16:56,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:56,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:16:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:16:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:16:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:16:56,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:56,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:56,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:56,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:56,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:16:56,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:56,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:16:56,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:56,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:56,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:56,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:16:56,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-28 13:16:56,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:56,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:16:56,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:56,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-28 13:16:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:56,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:16:56,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:16:56,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:56,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:16:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:56,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-28 13:16:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:56,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:56,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:56,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:16:56,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:56,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:16:56,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:56,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:56,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:16:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 159 proven. 174 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 13:16:57,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882297666] [2020-10-28 13:16:57,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:57,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:57,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762619329] [2020-10-28 13:16:57,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:57,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:57,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:57,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:57,331 INFO L87 Difference]: Start difference. First operand 5178 states and 5538 transitions. Second operand 7 states. [2020-10-28 13:17:00,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:00,448 INFO L93 Difference]: Finished difference Result 11080 states and 11855 transitions. [2020-10-28 13:17:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:17:00,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 494 [2020-10-28 13:17:00,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:00,476 INFO L225 Difference]: With dead ends: 11080 [2020-10-28 13:17:00,476 INFO L226 Difference]: Without dead ends: 5908 [2020-10-28 13:17:00,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:17:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5908 states. [2020-10-28 13:17:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5908 to 5864. [2020-10-28 13:17:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5864 states. [2020-10-28 13:17:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 6257 transitions. [2020-10-28 13:17:00,700 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 6257 transitions. Word has length 494 [2020-10-28 13:17:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:00,701 INFO L481 AbstractCegarLoop]: Abstraction has 5864 states and 6257 transitions. [2020-10-28 13:17:00,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 6257 transitions. [2020-10-28 13:17:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-28 13:17:00,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:00,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:17:00,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:17:00,721 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:00,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:00,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1435826099, now seen corresponding path program 1 times [2020-10-28 13:17:00,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:00,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142225790] [2020-10-28 13:17:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:00,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:01,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:05,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:05,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 594 [2020-10-28 13:17:05,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:17:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4742 [2020-10-28 13:17:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:05,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:17:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:17:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:17:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:05,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:05,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:05,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:05,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:05,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:17:05,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:05,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:05,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:05,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:05,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:05,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:05,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:17:05,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:17:05,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:05,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:17:05,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:06,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:17:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:06,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:06,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:17:06,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:06,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 13:17:06,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:06,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:06,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:17:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-28 13:17:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:06,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:06,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:17:06,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:17:06,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:06,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:17:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:06,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 323 proven. 114 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 13:17:06,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142225790] [2020-10-28 13:17:06,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:06,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:06,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44660624] [2020-10-28 13:17:06,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:06,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:06,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:06,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:06,677 INFO L87 Difference]: Start difference. First operand 5864 states and 6257 transitions. Second operand 7 states. [2020-10-28 13:17:10,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:10,734 INFO L93 Difference]: Finished difference Result 13452 states and 14533 transitions. [2020-10-28 13:17:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:17:10,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 578 [2020-10-28 13:17:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:10,785 INFO L225 Difference]: With dead ends: 13452 [2020-10-28 13:17:10,785 INFO L226 Difference]: Without dead ends: 7585 [2020-10-28 13:17:10,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:17:10,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7585 states. [2020-10-28 13:17:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7585 to 6897. [2020-10-28 13:17:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6897 states. [2020-10-28 13:17:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6897 states to 6897 states and 7340 transitions. [2020-10-28 13:17:10,994 INFO L78 Accepts]: Start accepts. Automaton has 6897 states and 7340 transitions. Word has length 578 [2020-10-28 13:17:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:10,996 INFO L481 AbstractCegarLoop]: Abstraction has 6897 states and 7340 transitions. [2020-10-28 13:17:10,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:10,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6897 states and 7340 transitions. [2020-10-28 13:17:11,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2020-10-28 13:17:11,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:11,072 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-28 13:17:11,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:17:11,072 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:11,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:11,073 INFO L82 PathProgramCache]: Analyzing trace with hash -644288852, now seen corresponding path program 1 times [2020-10-28 13:17:11,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:11,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657818214] [2020-10-28 13:17:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:11,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:12,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:16,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:16,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 759 [2020-10-28 13:17:16,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:17:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-28 13:17:16,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:16,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:17:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:17:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:16,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:16,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:16,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:16,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:16,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:17:16,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:16,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:16,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:16,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:16,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:16,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:16,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:16,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:17:16,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:17:16,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:16,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:17:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:16,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:17:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:16,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:17,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:17,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:17:17,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 13:17:17,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:17,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:17:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:17,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:17:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:17,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:17,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:17,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:17:17,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:17:17,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:17,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:17:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:17,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:17:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:17,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:17,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:17:17,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:17,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:17:17,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:17,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:17:17,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:17,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 464 proven. 180 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-28 13:17:18,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657818214] [2020-10-28 13:17:18,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:18,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:18,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668659141] [2020-10-28 13:17:18,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:18,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:18,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:18,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:18,042 INFO L87 Difference]: Start difference. First operand 6897 states and 7340 transitions. Second operand 7 states. [2020-10-28 13:17:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:21,733 INFO L93 Difference]: Finished difference Result 13814 states and 14717 transitions. [2020-10-28 13:17:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:17:21,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 741 [2020-10-28 13:17:21,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:21,755 INFO L225 Difference]: With dead ends: 13814 [2020-10-28 13:17:21,755 INFO L226 Difference]: Without dead ends: 7262 [2020-10-28 13:17:21,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 13:17:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7262 states. [2020-10-28 13:17:21,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7262 to 7236. [2020-10-28 13:17:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7236 states. [2020-10-28 13:17:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 7683 transitions. [2020-10-28 13:17:21,915 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 7683 transitions. Word has length 741 [2020-10-28 13:17:21,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:21,916 INFO L481 AbstractCegarLoop]: Abstraction has 7236 states and 7683 transitions. [2020-10-28 13:17:21,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:21,916 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 7683 transitions. [2020-10-28 13:17:21,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2020-10-28 13:17:21,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:21,929 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:17:21,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:17:21,929 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:21,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:21,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2113778015, now seen corresponding path program 1 times [2020-10-28 13:17:21,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:21,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794972344] [2020-10-28 13:17:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:22,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:27,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:27,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 795 [2020-10-28 13:17:27,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:17:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 13:17:27,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:27,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:17:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:17:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:27,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:27,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:27,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:27,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:27,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:17:27,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:27,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:27,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:27,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:27,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:17:27,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:27,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 13:17:27,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:27,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:27,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:27,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:27,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:17:27,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:27,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:17:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:27,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:27,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:27,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:17:27,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:27,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 13:17:27,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:27,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:17:27,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:27,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:17:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:27,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:27,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:27,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:17:27,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:27,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:17:27,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:27,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:17:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:17:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:27,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:27,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:27,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:17:27,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:17:27,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:27,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:17:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:27,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-28 13:17:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:27,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:28,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:28,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:17:28,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:17:28,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:28,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:17:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 436 proven. 306 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-10-28 13:17:28,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794972344] [2020-10-28 13:17:28,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:28,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:28,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999195744] [2020-10-28 13:17:28,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:28,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:28,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:28,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:28,753 INFO L87 Difference]: Start difference. First operand 7236 states and 7683 transitions. Second operand 7 states. [2020-10-28 13:17:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:32,360 INFO L93 Difference]: Finished difference Result 16527 states and 17599 transitions. [2020-10-28 13:17:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:17:32,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 775 [2020-10-28 13:17:32,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:32,395 INFO L225 Difference]: With dead ends: 16527 [2020-10-28 13:17:32,395 INFO L226 Difference]: Without dead ends: 9636 [2020-10-28 13:17:32,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:17:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9636 states. [2020-10-28 13:17:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9636 to 8946. [2020-10-28 13:17:32,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8946 states. [2020-10-28 13:17:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8946 states to 8946 states and 9504 transitions. [2020-10-28 13:17:32,698 INFO L78 Accepts]: Start accepts. Automaton has 8946 states and 9504 transitions. Word has length 775 [2020-10-28 13:17:32,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:32,699 INFO L481 AbstractCegarLoop]: Abstraction has 8946 states and 9504 transitions. [2020-10-28 13:17:32,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:32,699 INFO L276 IsEmpty]: Start isEmpty. Operand 8946 states and 9504 transitions. [2020-10-28 13:17:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2020-10-28 13:17:32,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:32,716 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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] [2020-10-28 13:17:32,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:17:32,717 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:32,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:32,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1571689901, now seen corresponding path program 1 times [2020-10-28 13:17:32,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:32,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116488371] [2020-10-28 13:17:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:37,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:37,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 856 [2020-10-28 13:17:37,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:17:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:17:37,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:37,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:17:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:17:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:38,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:38,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:38,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:38,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:38,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:38,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:17:38,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:38,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:38,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:38,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:38,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:38,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:17:38,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:38,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:17:38,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:38,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:38,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:38,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:38,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:38,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:38,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:17:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:38,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:38,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:17:38,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:38,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:17:38,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:38,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:17:38,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:38,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:17:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:38,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:38,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:38,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:17:38,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:17:38,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:38,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:38,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:38,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:38,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:17:38,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:17:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:38,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:38,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:17:38,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:38,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:17:38,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:38,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:17:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:38,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-28 13:17:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:38,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:38,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:17:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:17:38,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:38,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:17:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1367 backedges. 538 proven. 180 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2020-10-28 13:17:39,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116488371] [2020-10-28 13:17:39,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:39,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:39,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319653476] [2020-10-28 13:17:39,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:39,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:39,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:39,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:39,537 INFO L87 Difference]: Start difference. First operand 8946 states and 9504 transitions. Second operand 7 states. [2020-10-28 13:17:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:43,504 INFO L93 Difference]: Finished difference Result 17902 states and 19054 transitions. [2020-10-28 13:17:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:17:43,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 836 [2020-10-28 13:17:43,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:43,546 INFO L225 Difference]: With dead ends: 17902 [2020-10-28 13:17:43,546 INFO L226 Difference]: Without dead ends: 9301 [2020-10-28 13:17:43,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:17:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9301 states. [2020-10-28 13:17:43,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 9285. [2020-10-28 13:17:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9285 states. [2020-10-28 13:17:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9285 states to 9285 states and 9853 transitions. [2020-10-28 13:17:43,767 INFO L78 Accepts]: Start accepts. Automaton has 9285 states and 9853 transitions. Word has length 836 [2020-10-28 13:17:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:43,769 INFO L481 AbstractCegarLoop]: Abstraction has 9285 states and 9853 transitions. [2020-10-28 13:17:43,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 9285 states and 9853 transitions. [2020-10-28 13:17:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2020-10-28 13:17:43,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:43,789 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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] [2020-10-28 13:17:43,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:17:43,790 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:43,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1407369751, now seen corresponding path program 1 times [2020-10-28 13:17:43,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:43,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572000313] [2020-10-28 13:17:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:44,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:45,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:49,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:49,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 858 [2020-10-28 13:17:49,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:17:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 13:17:49,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:49,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:49,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:49,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-28 13:17:49,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:17:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:49,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:49,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:49,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:49,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:49,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:49,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:17:49,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:49,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:49,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:49,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:49,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:49,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:49,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:17:49,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:17:49,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:49,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:49,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:49,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:17:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:49,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:49,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:49,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:17:49,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:49,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:17:49,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:49,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:49,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:49,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:17:49,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:49,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:17:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:49,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:49,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:17:49,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:49,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:17:49,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:49,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:17:49,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:50,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-28 13:17:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:50,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:50,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:50,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:17:50,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:50,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:17:50,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:50,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:17:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:50,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:50,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-28 13:17:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:50,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:50,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:17:50,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:50,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:17:50,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:50,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:17:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:50,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 538 proven. 180 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2020-10-28 13:17:50,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572000313] [2020-10-28 13:17:50,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:50,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:50,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543823135] [2020-10-28 13:17:50,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:50,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:50,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:50,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:50,778 INFO L87 Difference]: Start difference. First operand 9285 states and 9853 transitions. Second operand 7 states. [2020-10-28 13:17:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:54,998 INFO L93 Difference]: Finished difference Result 19932 states and 21375 transitions. [2020-10-28 13:17:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:17:55,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 838 [2020-10-28 13:17:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:55,033 INFO L225 Difference]: With dead ends: 19932 [2020-10-28 13:17:55,033 INFO L226 Difference]: Without dead ends: 10992 [2020-10-28 13:17:55,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:17:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2020-10-28 13:17:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 10651. [2020-10-28 13:17:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10651 states. [2020-10-28 13:17:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10651 states to 10651 states and 11260 transitions. [2020-10-28 13:17:55,259 INFO L78 Accepts]: Start accepts. Automaton has 10651 states and 11260 transitions. Word has length 838 [2020-10-28 13:17:55,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:55,260 INFO L481 AbstractCegarLoop]: Abstraction has 10651 states and 11260 transitions. [2020-10-28 13:17:55,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 10651 states and 11260 transitions. [2020-10-28 13:17:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2020-10-28 13:17:55,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:55,279 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:17:55,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:17:55,280 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:55,280 INFO L82 PathProgramCache]: Analyzing trace with hash -462873654, now seen corresponding path program 1 times [2020-10-28 13:17:55,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:55,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440443854] [2020-10-28 13:17:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:55,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:55,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:00,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:00,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 906 [2020-10-28 13:18:00,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:18:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4797 [2020-10-28 13:18:00,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:00,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-28 13:18:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 13:18:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:00,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:00,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:00,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:00,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:18:00,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:00,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:00,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:00,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:00,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:00,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:18:00,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:18:00,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:00,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:00,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:18:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:00,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:00,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:18:00,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:18:00,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:00,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:00,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:18:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:00,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:00,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:18:00,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:18:00,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:00,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:00,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:18:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:00,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:00,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:18:00,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:00,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:18:00,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:00,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:00,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:00,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:18:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:00,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:01,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:01,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:18:01,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:01,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:18:01,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:01,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:18:01,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:01,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-28 13:18:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:01,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:01,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:18:01,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:01,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:18:01,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:01,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:18:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 838 proven. 2 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2020-10-28 13:18:01,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440443854] [2020-10-28 13:18:01,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:01,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:18:01,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503849557] [2020-10-28 13:18:01,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:18:01,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:01,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:18:01,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:01,710 INFO L87 Difference]: Start difference. First operand 10651 states and 11260 transitions. Second operand 7 states. [2020-10-28 13:18:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:07,204 INFO L93 Difference]: Finished difference Result 25365 states and 26866 transitions. [2020-10-28 13:18:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:18:07,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 884 [2020-10-28 13:18:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:07,252 INFO L225 Difference]: With dead ends: 25365 [2020-10-28 13:18:07,252 INFO L226 Difference]: Without dead ends: 14718 [2020-10-28 13:18:07,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:18:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14718 states. [2020-10-28 13:18:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14718 to 14042. [2020-10-28 13:18:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14042 states. [2020-10-28 13:18:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14042 states to 14042 states and 14771 transitions. [2020-10-28 13:18:07,720 INFO L78 Accepts]: Start accepts. Automaton has 14042 states and 14771 transitions. Word has length 884 [2020-10-28 13:18:07,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:07,723 INFO L481 AbstractCegarLoop]: Abstraction has 14042 states and 14771 transitions. [2020-10-28 13:18:07,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 14042 states and 14771 transitions. [2020-10-28 13:18:07,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-28 13:18:07,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:07,752 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:07,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:18:07,753 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:07,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:07,754 INFO L82 PathProgramCache]: Analyzing trace with hash -506396885, now seen corresponding path program 1 times [2020-10-28 13:18:07,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:07,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452619208] [2020-10-28 13:18:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:08,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:08,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:13,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:13,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 977 [2020-10-28 13:18:13,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:18:13,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5171 [2020-10-28 13:18:13,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:13,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 797 [2020-10-28 13:18:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 13:18:13,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:13,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:13,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:13,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:13,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:13,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:13,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:18:13,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:13,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:13,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:13,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:13,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:13,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:18:13,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:18:13,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:13,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:13,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:18:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:13,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:13,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:18:13,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:18:13,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:13,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:13,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:18:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:13,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 13:18:13,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:18:13,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:13,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:13,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-28 13:18:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:14,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:14,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:14,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 13:18:14,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 13:18:14,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:14,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 13:18:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:14,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-28 13:18:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:14,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:14,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:18:14,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:14,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:18:14,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:14,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:18:14,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 728 proven. 2 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2020-10-28 13:18:15,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452619208] [2020-10-28 13:18:15,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:15,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:18:15,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885136494] [2020-10-28 13:18:15,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:18:15,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:15,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:18:15,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:15,025 INFO L87 Difference]: Start difference. First operand 14042 states and 14771 transitions. Second operand 7 states. [2020-10-28 13:18:19,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:19,315 INFO L93 Difference]: Finished difference Result 32160 states and 33898 transitions. [2020-10-28 13:18:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:18:19,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 957 [2020-10-28 13:18:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:19,366 INFO L225 Difference]: With dead ends: 32160 [2020-10-28 13:18:19,366 INFO L226 Difference]: Without dead ends: 18463 [2020-10-28 13:18:19,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:18:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18463 states. [2020-10-28 13:18:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18463 to 17770. [2020-10-28 13:18:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17770 states. [2020-10-28 13:18:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17770 states to 17770 states and 18663 transitions. [2020-10-28 13:18:19,727 INFO L78 Accepts]: Start accepts. Automaton has 17770 states and 18663 transitions. Word has length 957 [2020-10-28 13:18:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:19,728 INFO L481 AbstractCegarLoop]: Abstraction has 17770 states and 18663 transitions. [2020-10-28 13:18:19,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 17770 states and 18663 transitions. [2020-10-28 13:18:19,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2020-10-28 13:18:19,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:19,756 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:19,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:18:19,757 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:19,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:19,757 INFO L82 PathProgramCache]: Analyzing trace with hash 317684130, now seen corresponding path program 1 times [2020-10-28 13:18:19,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:19,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468181755] [2020-10-28 13:18:19,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:21,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:25,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:25,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 999 [2020-10-28 13:18:25,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:18:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 13:18:25,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:25,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:18:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-28 13:18:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 13:18:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:25,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:25,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:25,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:25,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:25,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:18:25,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:25,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:25,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:25,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:25,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:25,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:25,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:25,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:25,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:25,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:18:25,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:25,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:18:25,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:25,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:25,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:18:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:25,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:25,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:18:25,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:18:25,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:25,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:25,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:18:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:25,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:25,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:18:25,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:25,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:18:25,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:25,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:25,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:25,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:18:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:25,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:25,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:18:25,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:18:25,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:25,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:25,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:25,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:18:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:25,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:25,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:25,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:18:25,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 13:18:25,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:25,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:18:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:26,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:18:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:26,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2039 backedges. 348 proven. 6 refuted. 0 times theorem prover too weak. 1685 trivial. 0 not checked. [2020-10-28 13:18:26,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468181755] [2020-10-28 13:18:26,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:26,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:18:26,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404330043] [2020-10-28 13:18:26,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:18:26,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:26,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:18:26,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:18:26,844 INFO L87 Difference]: Start difference. First operand 17770 states and 18663 transitions. Second operand 6 states. [2020-10-28 13:18:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:30,372 INFO L93 Difference]: Finished difference Result 35195 states and 36978 transitions. [2020-10-28 13:18:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:18:30,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 977 [2020-10-28 13:18:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:30,415 INFO L225 Difference]: With dead ends: 35195 [2020-10-28 13:18:30,415 INFO L226 Difference]: Without dead ends: 17770 [2020-10-28 13:18:30,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:30,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17770 states. [2020-10-28 13:18:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17770 to 17770. [2020-10-28 13:18:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17770 states. [2020-10-28 13:18:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17770 states to 17770 states and 18560 transitions. [2020-10-28 13:18:30,849 INFO L78 Accepts]: Start accepts. Automaton has 17770 states and 18560 transitions. Word has length 977 [2020-10-28 13:18:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:30,850 INFO L481 AbstractCegarLoop]: Abstraction has 17770 states and 18560 transitions. [2020-10-28 13:18:30,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:18:30,850 INFO L276 IsEmpty]: Start isEmpty. Operand 17770 states and 18560 transitions. [2020-10-28 13:18:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2020-10-28 13:18:30,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:30,899 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:30,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:18:30,900 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:30,901 INFO L82 PathProgramCache]: Analyzing trace with hash 274494142, now seen corresponding path program 1 times [2020-10-28 13:18:30,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:30,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028610685] [2020-10-28 13:18:30,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:31,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:36,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:36,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1454 [2020-10-28 13:18:36,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:18:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-28 13:18:36,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:36,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-28 13:18:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:18:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:36,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:36,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:36,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:36,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:36,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:18:36,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:36,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:36,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:36,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:36,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:36,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:36,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:36,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:36,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:18:36,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:36,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:18:36,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:36,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:36,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:36,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:18:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:36,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:36,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:18:36,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:36,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:18:36,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:36,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:36,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:18:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:36,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:36,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:36,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:18:36,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:18:36,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:36,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:18:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:36,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:36,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:18:36,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:36,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:18:36,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:36,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:36,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:36,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:37,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:18:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:37,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:37,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:18:37,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:37,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 13:18:37,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:37,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:37,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:18:37,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:37,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:18:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:37,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:37,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:18:37,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-28 13:18:37,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:37,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:18:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:37,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-28 13:18:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:38,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:38,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:18:38,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:38,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:18:38,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:38,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:18:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:38,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:38,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1226 [2020-10-28 13:18:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:38,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:38,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 13:18:38,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:18:38,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:38,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-28 13:18:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 1302 proven. 257 refuted. 0 times theorem prover too weak. 2601 trivial. 0 not checked. [2020-10-28 13:18:40,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028610685] [2020-10-28 13:18:40,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:40,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:18:40,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413879808] [2020-10-28 13:18:40,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:18:40,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:40,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:18:40,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:40,370 INFO L87 Difference]: Start difference. First operand 17770 states and 18560 transitions. Second operand 7 states. [2020-10-28 13:18:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:44,505 INFO L93 Difference]: Finished difference Result 35205 states and 36784 transitions. [2020-10-28 13:18:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:18:44,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1428 [2020-10-28 13:18:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:44,535 INFO L225 Difference]: With dead ends: 35205 [2020-10-28 13:18:44,535 INFO L226 Difference]: Without dead ends: 17780 [2020-10-28 13:18:44,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:18:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17780 states. [2020-10-28 13:18:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17780 to 17770. [2020-10-28 13:18:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17770 states. [2020-10-28 13:18:44,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17770 states to 17770 states and 18548 transitions. [2020-10-28 13:18:44,861 INFO L78 Accepts]: Start accepts. Automaton has 17770 states and 18548 transitions. Word has length 1428 [2020-10-28 13:18:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:44,862 INFO L481 AbstractCegarLoop]: Abstraction has 17770 states and 18548 transitions. [2020-10-28 13:18:44,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:44,863 INFO L276 IsEmpty]: Start isEmpty. Operand 17770 states and 18548 transitions. [2020-10-28 13:18:44,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1494 [2020-10-28 13:18:44,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:44,912 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:44,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:18:44,913 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:44,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:44,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2023447557, now seen corresponding path program 1 times [2020-10-28 13:18:44,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:44,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082855] [2020-10-28 13:18:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:45,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:50,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:50,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1521 [2020-10-28 13:18:50,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:18:50,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 13:18:50,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:50,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1238 [2020-10-28 13:18:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-28 13:18:50,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:50,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:50,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:50,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:50,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:18:50,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:50,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:50,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:50,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:50,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:18:50,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:18:50,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:50,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:18:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:50,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:50,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:18:50,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:18:50,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:50,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:50,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:18:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:50,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:50,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:50,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:18:50,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:50,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:18:50,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:50,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:50,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:50,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:18:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:50,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:51,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:51,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:18:51,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:51,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:18:51,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:51,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:51,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:18:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:51,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:51,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:18:51,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:18:51,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:51,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:18:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:51,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:51,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:51,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:18:51,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:51,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:18:51,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:51,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:51,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:51,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:51,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-28 13:18:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:51,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:51,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:18:51,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:51,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:18:51,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:51,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:51,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-28 13:18:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:51,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:51,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:51,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:18:51,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:51,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:18:51,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:51,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:51,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:18:51,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:51,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1222 [2020-10-28 13:18:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:51,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:51,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-28 13:18:51,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 13:18:51,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:51,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-28 13:18:51,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4966 backedges. 1673 proven. 2 refuted. 0 times theorem prover too weak. 3291 trivial. 0 not checked. [2020-10-28 13:18:53,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082855] [2020-10-28 13:18:53,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:53,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:18:53,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867107173] [2020-10-28 13:18:53,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:18:53,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:53,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:18:53,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:53,331 INFO L87 Difference]: Start difference. First operand 17770 states and 18548 transitions. Second operand 7 states. [2020-10-28 13:18:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:57,509 INFO L93 Difference]: Finished difference Result 35537 states and 37123 transitions. [2020-10-28 13:18:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:18:57,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1493 [2020-10-28 13:18:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:57,546 INFO L225 Difference]: With dead ends: 35537 [2020-10-28 13:18:57,547 INFO L226 Difference]: Without dead ends: 17089 [2020-10-28 13:18:57,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:18:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17089 states. [2020-10-28 13:18:57,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17089 to 17077. [2020-10-28 13:18:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17077 states. [2020-10-28 13:18:57,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 17807 transitions. [2020-10-28 13:18:57,860 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 17807 transitions. Word has length 1493 [2020-10-28 13:18:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:57,862 INFO L481 AbstractCegarLoop]: Abstraction has 17077 states and 17807 transitions. [2020-10-28 13:18:57,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 17807 transitions. [2020-10-28 13:18:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1700 [2020-10-28 13:18:57,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:57,932 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:57,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:18:57,932 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:57,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:57,933 INFO L82 PathProgramCache]: Analyzing trace with hash 2142570178, now seen corresponding path program 1 times [2020-10-28 13:18:57,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:57,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712404079] [2020-10-28 13:18:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:59,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:02,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:03,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:03,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1729 [2020-10-28 13:19:03,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:19:03,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-28 13:19:03,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:03,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1126 [2020-10-28 13:19:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:19:03,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:03,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:03,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:03,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:19:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:03,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:03,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:19:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:03,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:03,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:19:03,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:19:03,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:03,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:03,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:19:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:03,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:03,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:19:03,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:19:03,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:03,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:19:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:03,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:03,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:03,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:19:03,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:19:03,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:03,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:03,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:03,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:19:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:03,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:03,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:19:03,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:03,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:19:03,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:03,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:03,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:03,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:19:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:04,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:04,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:19:04,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:04,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:19:04,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:04,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:04,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:19:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:04,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:04,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:04,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:19:04,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:19:04,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:04,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:04,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-28 13:19:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:04,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:04,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:04,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:19:04,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:04,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:19:04,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:04,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:04,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:04,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 13:19:04,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-28 13:19:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:04,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:04,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:04,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:19:04,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-28 13:19:04,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:04,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:19:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:05,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1385 [2020-10-28 13:19:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:05,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:05,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:05,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:19:05,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:19:05,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:05,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:05,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:05,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:19:05,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:05,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:05,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1497 [2020-10-28 13:19:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:05,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:05,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 13:19:05,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:05,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:19:05,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:05,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-28 13:19:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6229 backedges. 1699 proven. 257 refuted. 0 times theorem prover too weak. 4273 trivial. 0 not checked. [2020-10-28 13:19:06,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712404079] [2020-10-28 13:19:06,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:06,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:06,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134566157] [2020-10-28 13:19:06,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:06,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:06,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:06,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:06,974 INFO L87 Difference]: Start difference. First operand 17077 states and 17807 transitions. Second operand 7 states. [2020-10-28 13:19:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:10,914 INFO L93 Difference]: Finished difference Result 36862 states and 38484 transitions. [2020-10-28 13:19:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:19:10,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1699 [2020-10-28 13:19:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:10,948 INFO L225 Difference]: With dead ends: 36862 [2020-10-28 13:19:10,949 INFO L226 Difference]: Without dead ends: 20130 [2020-10-28 13:19:10,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:19:10,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20130 states. [2020-10-28 13:19:11,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20130 to 19442. [2020-10-28 13:19:11,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19442 states. [2020-10-28 13:19:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19442 states to 19442 states and 20281 transitions. [2020-10-28 13:19:11,281 INFO L78 Accepts]: Start accepts. Automaton has 19442 states and 20281 transitions. Word has length 1699 [2020-10-28 13:19:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:11,282 INFO L481 AbstractCegarLoop]: Abstraction has 19442 states and 20281 transitions. [2020-10-28 13:19:11,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 19442 states and 20281 transitions. [2020-10-28 13:19:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1762 [2020-10-28 13:19:11,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:11,338 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:19:11,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 13:19:11,338 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:11,339 INFO L82 PathProgramCache]: Analyzing trace with hash 623210814, now seen corresponding path program 1 times [2020-10-28 13:19:11,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:11,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789661923] [2020-10-28 13:19:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:12,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:13,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:16,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:16,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1791 [2020-10-28 13:19:16,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:19:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5171 [2020-10-28 13:19:16,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:16,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:19:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1463 [2020-10-28 13:19:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-28 13:19:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:17,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:17,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:17,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:17,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:19:17,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:17,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:17,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:17,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:17,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:19:17,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:17,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:19:17,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:17,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:17,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:17,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:17,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:17,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:17,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:19:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:17,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:17,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:17,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:19:17,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:19:17,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:17,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:17,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:19:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:17,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:17,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:19:17,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:17,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:19:17,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:17,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:17,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:19:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:17,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:17,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:19:17,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:17,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:19:17,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:17,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:17,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:17,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:19:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:17,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:17,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:19:17,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:17,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:19:17,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:17,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:17,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:19:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:17,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:17,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:19:17,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:19:17,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:17,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:17,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-28 13:19:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:17,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:17,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:19:17,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:17,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:19:17,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:17,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:17,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:17,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:17,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:17,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1174 [2020-10-28 13:19:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:17,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:19:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 13:19:18,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:18,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-28 13:19:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1447 [2020-10-28 13:19:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:18,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:18,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:19:18,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:19:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:19:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:18,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 13:19:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:18,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1559 [2020-10-28 13:19:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:18,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:18,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:18,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 13:19:18,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-28 13:19:18,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:18,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 13:19:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0