/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:25:34,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:25:34,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:25:34,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:25:34,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:25:34,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:25:34,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:25:34,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:25:35,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:25:35,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:25:35,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:25:35,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:25:35,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:25:35,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:25:35,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:25:35,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:25:35,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:25:35,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:25:35,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:25:35,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:25:35,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:25:35,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:25:35,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:25:35,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:25:35,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:25:35,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:25:35,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:25:35,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:25:35,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:25:35,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:25:35,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:25:35,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:25:35,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:25:35,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:25:35,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:25:35,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:25:35,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:25:35,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:25:35,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:25:35,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:25:35,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:25:35,053 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 [2020-09-25 03:25:35,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:25:35,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:25:35,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:25:35,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:25:35,105 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:25:35,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:25:35,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:25:35,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:25:35,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:25:35,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:25:35,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:25:35,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:25:35,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:25:35,108 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:25:35,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:25:35,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:25:35,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:25:35,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:25:35,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:25:35,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:25:35,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:25:35,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:25:35,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:25:35,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:25:35,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:25:35,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:25:35,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:25:35,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:25:35,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:25:35,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=true; [2020-09-25 03:25:35,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:25:35,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:25:35,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:25:35,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:25:35,605 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:25:35,606 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 03:25:35,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec79cc525/8d27bd343c62485a8be45840cf7ce768/FLAG7e4285b95 [2020-09-25 03:25:36,211 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:25:36,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 03:25:36,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec79cc525/8d27bd343c62485a8be45840cf7ce768/FLAG7e4285b95 [2020-09-25 03:25:36,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec79cc525/8d27bd343c62485a8be45840cf7ce768 [2020-09-25 03:25:36,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:25:36,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:25:36,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:25:36,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:25:36,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:25:36,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:25:36" (1/1) ... [2020-09-25 03:25:36,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36, skipping insertion in model container [2020-09-25 03:25:36,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:25:36" (1/1) ... [2020-09-25 03:25:36,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:25:36,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:25:36,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:25:36,891 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:25:36,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:25:36,946 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:25:36,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36 WrapperNode [2020-09-25 03:25:36,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:25:36,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:25:36,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:25:36,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:25:37,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36" (1/1) ... [2020-09-25 03:25:37,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36" (1/1) ... [2020-09-25 03:25:37,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36" (1/1) ... [2020-09-25 03:25:37,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36" (1/1) ... [2020-09-25 03:25:37,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36" (1/1) ... [2020-09-25 03:25:37,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36" (1/1) ... [2020-09-25 03:25:37,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36" (1/1) ... [2020-09-25 03:25:37,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:25:37,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:25:37,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:25:37,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:25:37,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36" (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 [2020-09-25 03:25:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:25:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:25:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:25:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-25 03:25:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-25 03:25:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:25:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:25:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:25:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:25:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-25 03:25:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:25:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-25 03:25:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:25:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:25:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:25:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:25:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:25:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:25:37,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:25:37,700 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-25 03:25:37,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:25:37 BoogieIcfgContainer [2020-09-25 03:25:37,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:25:37,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:25:37,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:25:37,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:25:37,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:25:36" (1/3) ... [2020-09-25 03:25:37,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7468d9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:25:37, skipping insertion in model container [2020-09-25 03:25:37,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:36" (2/3) ... [2020-09-25 03:25:37,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7468d9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:25:37, skipping insertion in model container [2020-09-25 03:25:37,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:25:37" (3/3) ... [2020-09-25 03:25:37,721 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-25 03:25:37,732 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:25:37,742 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:25:37,762 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:25:37,795 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:25:37,795 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:25:37,795 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:25:37,795 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:25:37,796 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:25:37,796 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:25:37,796 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:25:37,796 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:25:37,822 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-25 03:25:37,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 03:25:37,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:37,831 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] [2020-09-25 03:25:37,831 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-25 03:25:37,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:37,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219148639] [2020-09-25 03:25:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:38,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:38,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:38,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:38,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:25:38,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:25:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-25 03:25:38,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:25:38,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:25:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:25:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:25:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:38,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:38,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:38,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:25:38,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:25:38,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:38,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:38,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:38,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:38,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:25:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:25:38,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219148639] [2020-09-25 03:25:38,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:25:38,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:25:38,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635762005] [2020-09-25 03:25:38,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:25:38,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:38,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:25:38,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:25:38,643 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 6 states. [2020-09-25 03:25:39,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:39,130 INFO L93 Difference]: Finished difference Result 266 states and 324 transitions. [2020-09-25 03:25:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:25:39,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-09-25 03:25:39,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:39,145 INFO L225 Difference]: With dead ends: 266 [2020-09-25 03:25:39,145 INFO L226 Difference]: Without dead ends: 135 [2020-09-25 03:25:39,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:25:39,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-25 03:25:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-09-25 03:25:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 03:25:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions. [2020-09-25 03:25:39,218 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 23 [2020-09-25 03:25:39,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:39,218 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 134 transitions. [2020-09-25 03:25:39,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:25:39,219 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions. [2020-09-25 03:25:39,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:25:39,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:39,222 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] [2020-09-25 03:25:39,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:25:39,223 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:39,224 INFO L82 PathProgramCache]: Analyzing trace with hash 23578911, now seen corresponding path program 1 times [2020-09-25 03:25:39,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:39,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452546750] [2020-09-25 03:25:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:39,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:39,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:39,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:39,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:44,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 03:25:44,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:25:44,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:25:44,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:25:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:25:44,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:25:44,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 03:25:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:44,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:25:44,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:25:44,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:44,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:44,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:44,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:25:44,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:25:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:44,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:44,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:25:44,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:25:44,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 03:25:44,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:44,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:25:44,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:25:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:44,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 03:25:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:44,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:44,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:25:44,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:44,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 03:25:44,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:25:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:25:44,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:25:44,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452546750] [2020-09-25 03:25:44,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:25:44,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 03:25:44,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075030793] [2020-09-25 03:25:44,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 03:25:44,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:44,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 03:25:44,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:25:44,673 INFO L87 Difference]: Start difference. First operand 122 states and 134 transitions. Second operand 14 states. [2020-09-25 03:25:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:46,290 INFO L93 Difference]: Finished difference Result 444 states and 522 transitions. [2020-09-25 03:25:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 03:25:46,291 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-09-25 03:25:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:46,298 INFO L225 Difference]: With dead ends: 444 [2020-09-25 03:25:46,299 INFO L226 Difference]: Without dead ends: 366 [2020-09-25 03:25:46,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 03:25:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-09-25 03:25:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 212. [2020-09-25 03:25:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-25 03:25:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 245 transitions. [2020-09-25 03:25:46,334 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 245 transitions. Word has length 59 [2020-09-25 03:25:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:46,334 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 245 transitions. [2020-09-25 03:25:46,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 03:25:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 245 transitions. [2020-09-25 03:25:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 03:25:46,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:46,338 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:25:46,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:25:46,338 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:46,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:46,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1272166002, now seen corresponding path program 1 times [2020-09-25 03:25:46,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:46,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967793948] [2020-09-25 03:25:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:46,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:46,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:46,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:47,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:51,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:51,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:25:51,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:25:51,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 03:25:51,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:25:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:25:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 03:25:51,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:51,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:51,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:51,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:25:51,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:25:51,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:51,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:25:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:51,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:51,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:25:51,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:25:51,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:25:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:25:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:51,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 03:25:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:51,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:51,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:25:51,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:51,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 03:25:51,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:25:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:25:51,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:25:51,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967793948] [2020-09-25 03:25:51,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:25:51,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:25:51,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121004584] [2020-09-25 03:25:51,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:25:51,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:51,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:25:51,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:25:51,576 INFO L87 Difference]: Start difference. First operand 212 states and 245 transitions. Second operand 13 states. [2020-09-25 03:25:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:52,387 INFO L93 Difference]: Finished difference Result 490 states and 574 transitions. [2020-09-25 03:25:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:25:52,388 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-09-25 03:25:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:52,391 INFO L225 Difference]: With dead ends: 490 [2020-09-25 03:25:52,391 INFO L226 Difference]: Without dead ends: 322 [2020-09-25 03:25:52,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-09-25 03:25:52,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-09-25 03:25:52,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 256. [2020-09-25 03:25:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-25 03:25:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 300 transitions. [2020-09-25 03:25:52,435 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 300 transitions. Word has length 65 [2020-09-25 03:25:52,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:52,437 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 300 transitions. [2020-09-25 03:25:52,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:25:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 300 transitions. [2020-09-25 03:25:52,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 03:25:52,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:52,444 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:25:52,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:25:52,444 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:52,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1668970121, now seen corresponding path program 1 times [2020-09-25 03:25:52,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:52,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833737649] [2020-09-25 03:25:52,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:52,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:52,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:52,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:57,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 03:25:57,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:25:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 03:25:57,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:25:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:25:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 03:25:57,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:57,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:57,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:25:57,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:57,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:25:57,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:57,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:57,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:57,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:25:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:57,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:25:57,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:57,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:25:57,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:57,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:25:57,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:57,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:25:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:57,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 03:25:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:57,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:57,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:25:57,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:57,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 03:25:57,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:25:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:57,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:25:57,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:25:57,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833737649] [2020-09-25 03:25:57,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:25:57,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:25:57,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054445075] [2020-09-25 03:25:57,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:25:57,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:57,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:25:57,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:25:57,664 INFO L87 Difference]: Start difference. First operand 256 states and 300 transitions. Second operand 12 states. [2020-09-25 03:25:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:58,465 INFO L93 Difference]: Finished difference Result 714 states and 859 transitions. [2020-09-25 03:25:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 03:25:58,465 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-09-25 03:25:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:58,472 INFO L225 Difference]: With dead ends: 714 [2020-09-25 03:25:58,472 INFO L226 Difference]: Without dead ends: 465 [2020-09-25 03:25:58,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2020-09-25 03:25:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-09-25 03:25:58,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 391. [2020-09-25 03:25:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-09-25 03:25:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 464 transitions. [2020-09-25 03:25:58,505 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 464 transitions. Word has length 71 [2020-09-25 03:25:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:58,506 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 464 transitions. [2020-09-25 03:25:58,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:25:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 464 transitions. [2020-09-25 03:25:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 03:25:58,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:58,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:25:58,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:25:58,510 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:58,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:58,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1162978787, now seen corresponding path program 1 times [2020-09-25 03:25:58,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:58,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624909214] [2020-09-25 03:25:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:58,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:58,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:03,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:03,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 03:26:03,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:26:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 03:26:03,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:26:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:26:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 03:26:03,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:03,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:03,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:03,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:03,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:26:03,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:03,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:03,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:03,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 03:26:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:03,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:03,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:26:03,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:26:03,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:26:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:26:03,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 03:26:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:03,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:03,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:03,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:03,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:26:03,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:26:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:26:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 03:26:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:03,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:03,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:26:03,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:26:03,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:26:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 03:26:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:03,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:03,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:03,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:03,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:03,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:26:03,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 03:26:03,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624909214] [2020-09-25 03:26:03,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:03,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:26:03,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733230525] [2020-09-25 03:26:03,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:26:03,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:03,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:26:03,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:26:03,822 INFO L87 Difference]: Start difference. First operand 391 states and 464 transitions. Second operand 10 states. [2020-09-25 03:26:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:26:04,367 INFO L93 Difference]: Finished difference Result 563 states and 665 transitions. [2020-09-25 03:26:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:26:04,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-09-25 03:26:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:26:04,372 INFO L225 Difference]: With dead ends: 563 [2020-09-25 03:26:04,372 INFO L226 Difference]: Without dead ends: 261 [2020-09-25 03:26:04,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:26:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-09-25 03:26:04,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2020-09-25 03:26:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 03:26:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 296 transitions. [2020-09-25 03:26:04,397 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 296 transitions. Word has length 103 [2020-09-25 03:26:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:26:04,400 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 296 transitions. [2020-09-25 03:26:04,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:26:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 296 transitions. [2020-09-25 03:26:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 03:26:04,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:26:04,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:26:04,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:26:04,407 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:26:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:26:04,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1892707860, now seen corresponding path program 1 times [2020-09-25 03:26:04,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:26:04,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125903307] [2020-09-25 03:26:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:26:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:04,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:05,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:05,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 03:26:05,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:26:05,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-09-25 03:26:05,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:26:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:26:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:26:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:05,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:05,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:05,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:05,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:05,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:26:05,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 03:26:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:05,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:05,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:26:05,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:26:05,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:26:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:05,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 03:26:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:05,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:05,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:05,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:05,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:26:05,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:05,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 03:26:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:05,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:05,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:26:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:26:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:26:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:05,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 03:26:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:05,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:05,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:05,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:05,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:26:05,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:05,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 03:26:05,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125903307] [2020-09-25 03:26:05,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:05,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:26:05,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637479710] [2020-09-25 03:26:05,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:26:05,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:05,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:26:05,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:26:05,702 INFO L87 Difference]: Start difference. First operand 258 states and 296 transitions. Second operand 7 states. [2020-09-25 03:26:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:26:06,099 INFO L93 Difference]: Finished difference Result 538 states and 618 transitions. [2020-09-25 03:26:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:26:06,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-09-25 03:26:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:26:06,107 INFO L225 Difference]: With dead ends: 538 [2020-09-25 03:26:06,107 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 03:26:06,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:26:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 03:26:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 265. [2020-09-25 03:26:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-09-25 03:26:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 303 transitions. [2020-09-25 03:26:06,132 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 303 transitions. Word has length 109 [2020-09-25 03:26:06,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:26:06,133 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 303 transitions. [2020-09-25 03:26:06,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:26:06,133 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 303 transitions. [2020-09-25 03:26:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 03:26:06,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:26:06,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:26:06,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:26:06,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:26:06,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:26:06,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1238084835, now seen corresponding path program 2 times [2020-09-25 03:26:06,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:26:06,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277719309] [2020-09-25 03:26:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:26:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:06,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:07,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:07,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 03:26:07,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:26:07,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1505 [2020-09-25 03:26:07,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:26:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:26:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:26:07,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:07,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:07,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:07,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:07,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:07,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:07,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:26:07,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:07,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 03:26:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:07,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:07,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:07,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:26:07,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:26:07,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:26:07,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:07,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:07,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 03:26:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:07,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:07,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:07,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:26:07,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:07,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 03:26:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:07,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:07,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:07,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:26:07,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:07,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:26:07,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:26:07,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:07,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:07,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 03:26:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:07,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:07,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:07,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:07,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:07,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:26:07,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 03:26:07,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277719309] [2020-09-25 03:26:07,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:07,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:26:07,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798352186] [2020-09-25 03:26:07,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:26:07,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:07,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:26:07,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:26:07,805 INFO L87 Difference]: Start difference. First operand 265 states and 303 transitions. Second operand 9 states. [2020-09-25 03:26:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:26:08,383 INFO L93 Difference]: Finished difference Result 545 states and 625 transitions. [2020-09-25 03:26:08,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:26:08,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-09-25 03:26:08,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:26:08,389 INFO L225 Difference]: With dead ends: 545 [2020-09-25 03:26:08,389 INFO L226 Difference]: Without dead ends: 307 [2020-09-25 03:26:08,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:26:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-25 03:26:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 272. [2020-09-25 03:26:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-25 03:26:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 310 transitions. [2020-09-25 03:26:08,412 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 310 transitions. Word has length 116 [2020-09-25 03:26:08,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:26:08,412 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 310 transitions. [2020-09-25 03:26:08,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:26:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 310 transitions. [2020-09-25 03:26:08,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 03:26:08,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:26:08,416 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:26:08,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:26:08,416 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:26:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:26:08,417 INFO L82 PathProgramCache]: Analyzing trace with hash -127797452, now seen corresponding path program 3 times [2020-09-25 03:26:08,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:26:08,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228563426] [2020-09-25 03:26:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:26:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:08,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:08,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:10,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:10,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 03:26:10,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:26:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1982 [2020-09-25 03:26:10,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:26:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:26:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:26:10,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:10,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:10,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:10,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:10,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:10,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:26:10,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:10,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 03:26:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:10,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:10,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:10,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:26:10,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:26:10,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:26:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:10,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 03:26:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:10,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:10,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:10,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:10,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:10,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:26:10,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:10,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:10,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:10,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:10,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:26:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:10,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:10,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:26:10,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:10,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:26:10,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:10,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:26:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:10,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 03:26:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:10,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:10,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:10,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:10,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:26:10,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:10,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:10,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:10,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:10,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 03:26:10,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228563426] [2020-09-25 03:26:10,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:10,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:26:10,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171134857] [2020-09-25 03:26:10,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:26:10,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:10,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:26:10,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:26:10,579 INFO L87 Difference]: Start difference. First operand 272 states and 310 transitions. Second operand 11 states. [2020-09-25 03:26:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:26:11,043 INFO L93 Difference]: Finished difference Result 552 states and 632 transitions. [2020-09-25 03:26:11,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:26:11,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2020-09-25 03:26:11,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:26:11,045 INFO L225 Difference]: With dead ends: 552 [2020-09-25 03:26:11,045 INFO L226 Difference]: Without dead ends: 314 [2020-09-25 03:26:11,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:26:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-09-25 03:26:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 279. [2020-09-25 03:26:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-09-25 03:26:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 317 transitions. [2020-09-25 03:26:11,064 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 317 transitions. Word has length 123 [2020-09-25 03:26:11,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:26:11,064 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 317 transitions. [2020-09-25 03:26:11,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:26:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 317 transitions. [2020-09-25 03:26:11,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 03:26:11,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:26:11,066 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 03:26:11,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:26:11,067 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:26:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:26:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash -901537853, now seen corresponding path program 4 times [2020-09-25 03:26:11,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:26:11,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48817174] [2020-09-25 03:26:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:26:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:11,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:11,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:11,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:14,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:14,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 03:26:14,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:26:14,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2939 [2020-09-25 03:26:14,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:26:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:26:14,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:26:14,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:14,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:14,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:14,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:14,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:26:14,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:14,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:14,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 03:26:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:14,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:14,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:14,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:26:14,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:14,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:26:14,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:14,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:26:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:14,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:14,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 03:26:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:14,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:14,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:14,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:26:14,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:14,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:14,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 03:26:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:14,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:14,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:14,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:26:14,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:26:14,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:26:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:14,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:14,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 03:26:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:14,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:14,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:14,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:26:14,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 03:26:14,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48817174] [2020-09-25 03:26:14,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:14,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:26:14,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145638040] [2020-09-25 03:26:14,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:26:14,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:14,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:26:14,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:26:14,209 INFO L87 Difference]: Start difference. First operand 279 states and 317 transitions. Second operand 13 states. [2020-09-25 03:26:14,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:26:14,742 INFO L93 Difference]: Finished difference Result 559 states and 639 transitions. [2020-09-25 03:26:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:26:14,746 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-09-25 03:26:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:26:14,748 INFO L225 Difference]: With dead ends: 559 [2020-09-25 03:26:14,749 INFO L226 Difference]: Without dead ends: 321 [2020-09-25 03:26:14,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:26:14,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-25 03:26:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 286. [2020-09-25 03:26:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-25 03:26:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 324 transitions. [2020-09-25 03:26:14,766 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 324 transitions. Word has length 130 [2020-09-25 03:26:14,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:26:14,768 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 324 transitions. [2020-09-25 03:26:14,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:26:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 324 transitions. [2020-09-25 03:26:14,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 03:26:14,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:26:14,770 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 03:26:14,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:26:14,771 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:26:14,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:26:14,771 INFO L82 PathProgramCache]: Analyzing trace with hash 360515668, now seen corresponding path program 5 times [2020-09-25 03:26:14,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:26:14,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076043484] [2020-09-25 03:26:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:26:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:14,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:17,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:17,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 03:26:17,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:26:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3051 [2020-09-25 03:26:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:26:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:26:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 03:26:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:17,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:17,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:17,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:26:17,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:17,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 03:26:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:17,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:17,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:26:17,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:17,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:26:17,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:26:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:17,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:18,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 03:26:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:18,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:18,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:18,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:18,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:18,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:26:18,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:18,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:18,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:18,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:18,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-25 03:26:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:18,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:18,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:26:18,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:26:18,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:26:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:18,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-25 03:26:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:18,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:18,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:18,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:18,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:26:18,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:18,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:18,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:18,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 03:26:18,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076043484] [2020-09-25 03:26:18,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:18,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 03:26:18,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976614402] [2020-09-25 03:26:18,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:26:18,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:18,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:26:18,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:26:18,053 INFO L87 Difference]: Start difference. First operand 286 states and 324 transitions. Second operand 15 states. [2020-09-25 03:26:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:26:18,889 INFO L93 Difference]: Finished difference Result 566 states and 646 transitions. [2020-09-25 03:26:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 03:26:18,890 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 137 [2020-09-25 03:26:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:26:18,892 INFO L225 Difference]: With dead ends: 566 [2020-09-25 03:26:18,892 INFO L226 Difference]: Without dead ends: 328 [2020-09-25 03:26:18,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-09-25 03:26:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-09-25 03:26:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 293. [2020-09-25 03:26:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-09-25 03:26:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 331 transitions. [2020-09-25 03:26:18,909 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 331 transitions. Word has length 137 [2020-09-25 03:26:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:26:18,909 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 331 transitions. [2020-09-25 03:26:18,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:26:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 331 transitions. [2020-09-25 03:26:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 03:26:18,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:26:18,912 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 03:26:18,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:26:18,913 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:26:18,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:26:18,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1192686941, now seen corresponding path program 6 times [2020-09-25 03:26:18,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:26:18,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62563469] [2020-09-25 03:26:18,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:26:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:18,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:18,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:22,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:22,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 03:26:22,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:26:22,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3756 [2020-09-25 03:26:22,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:26:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:26:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:26:22,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:22,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:22,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:22,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:26:22,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 03:26:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:22,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:22,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:26:22,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:26:22,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:26:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:22,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 03:26:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:22,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:22,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:22,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:22,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:26:22,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:22,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:22,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:22,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:22,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 03:26:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:22,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:22,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:26:22,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:22,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:26:22,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:26:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:22,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:22,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 03:26:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:22,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:22,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:22,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:26:22,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:26:22,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:26:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 03:26:22,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62563469] [2020-09-25 03:26:22,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:22,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 03:26:22,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844719918] [2020-09-25 03:26:22,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 03:26:22,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:22,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 03:26:22,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:26:22,902 INFO L87 Difference]: Start difference. First operand 293 states and 331 transitions. Second operand 17 states. [2020-09-25 03:26:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:26:23,807 INFO L93 Difference]: Finished difference Result 573 states and 653 transitions. [2020-09-25 03:26:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 03:26:23,810 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 144 [2020-09-25 03:26:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:26:23,812 INFO L225 Difference]: With dead ends: 573 [2020-09-25 03:26:23,812 INFO L226 Difference]: Without dead ends: 335 [2020-09-25 03:26:23,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-09-25 03:26:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-25 03:26:23,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 300. [2020-09-25 03:26:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-09-25 03:26:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 338 transitions. [2020-09-25 03:26:23,841 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 338 transitions. Word has length 144 [2020-09-25 03:26:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:26:23,842 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 338 transitions. [2020-09-25 03:26:23,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 03:26:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 338 transitions. [2020-09-25 03:26:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 03:26:23,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:26:23,845 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 03:26:23,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:26:23,845 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:26:23,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:26:23,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1960026484, now seen corresponding path program 7 times [2020-09-25 03:26:23,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:26:23,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974630317] [2020-09-25 03:26:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:26:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:23,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking...