/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:56:16,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:56:16,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:56:16,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:56:16,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:56:16,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:56:16,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:56:16,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:56:16,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:56:16,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:56:16,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:56:16,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:56:16,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:56:16,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:56:16,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:56:16,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:56:16,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:56:16,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:56:16,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:56:16,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:56:16,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:56:16,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:56:16,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:56:16,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:56:16,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:56:16,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:56:16,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:56:16,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:56:16,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:56:16,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:56:16,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:56:16,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:56:16,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:56:16,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:56:16,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:56:16,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:56:16,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:56:16,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:56:16,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:56:16,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:56:16,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:56:16,799 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 [2020-09-24 22:56:16,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:56:16,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:56:16,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:56:16,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:56:16,827 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:56:16,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:56:16,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:56:16,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:56:16,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:56:16,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:56:16,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:56:16,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:56:16,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:56:16,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:56:16,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:56:16,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:56:16,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:56:16,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:56:16,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:56:16,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:56:16,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:56:16,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:56:16,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:56:16,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:56:16,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:56:16,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:56:16,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:56:16,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:56:16,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:56:16,833 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:56:17,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:56:17,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:56:17,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:56:17,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:56:17,316 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:56:17,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-09-24 22:56:17,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507043062/93f189a901c149d4933ff67ad0a0e5e7/FLAG242ec66c9 [2020-09-24 22:56:18,005 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:56:18,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-09-24 22:56:18,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507043062/93f189a901c149d4933ff67ad0a0e5e7/FLAG242ec66c9 [2020-09-24 22:56:18,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/507043062/93f189a901c149d4933ff67ad0a0e5e7 [2020-09-24 22:56:18,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:56:18,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:56:18,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:56:18,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:56:18,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:56:18,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:56:18" (1/1) ... [2020-09-24 22:56:18,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bc88a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18, skipping insertion in model container [2020-09-24 22:56:18,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:56:18" (1/1) ... [2020-09-24 22:56:18,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:56:18,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:56:18,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:56:18,702 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:56:18,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:56:18,802 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:56:18,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18 WrapperNode [2020-09-24 22:56:18,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:56:18,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:56:18,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:56:18,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:56:18,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18" (1/1) ... [2020-09-24 22:56:18,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18" (1/1) ... [2020-09-24 22:56:18,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18" (1/1) ... [2020-09-24 22:56:18,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18" (1/1) ... [2020-09-24 22:56:18,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18" (1/1) ... [2020-09-24 22:56:18,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18" (1/1) ... [2020-09-24 22:56:18,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18" (1/1) ... [2020-09-24 22:56:18,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:56:18,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:56:18,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:56:18,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:56:18,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:56:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:56:19,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:56:19,039 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:56:19,039 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:56:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:56:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:56:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:56:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:56:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:56:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:56:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:56:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:56:19,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:56:19,977 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:56:19,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:56:19 BoogieIcfgContainer [2020-09-24 22:56:19,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:56:19,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:56:19,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:56:19,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:56:19,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:56:18" (1/3) ... [2020-09-24 22:56:19,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e52df95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:56:19, skipping insertion in model container [2020-09-24 22:56:19,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:18" (2/3) ... [2020-09-24 22:56:19,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e52df95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:56:19, skipping insertion in model container [2020-09-24 22:56:19,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:56:19" (3/3) ... [2020-09-24 22:56:19,998 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-09-24 22:56:20,010 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:56:20,022 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-09-24 22:56:20,045 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-09-24 22:56:20,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:56:20,082 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:56:20,082 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:56:20,083 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:56:20,083 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:56:20,083 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:56:20,083 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:56:20,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:56:20,121 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states. [2020-09-24 22:56:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 22:56:20,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:20,131 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] [2020-09-24 22:56:20,132 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:20,141 INFO L82 PathProgramCache]: Analyzing trace with hash 519309997, now seen corresponding path program 1 times [2020-09-24 22:56:20,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:20,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208289538] [2020-09-24 22:56:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:20,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:20,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:20,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:56:20,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-09-24 22:56:20,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:56:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:56:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:56:20,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:20,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:20,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:20,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:56:20,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:20,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:56:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:20,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208289538] [2020-09-24 22:56:20,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:20,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:56:20,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398142476] [2020-09-24 22:56:20,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:56:20,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:20,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:56:20,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:20,947 INFO L87 Difference]: Start difference. First operand 519 states. Second operand 6 states. [2020-09-24 22:56:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:22,784 INFO L93 Difference]: Finished difference Result 546 states and 624 transitions. [2020-09-24 22:56:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:56:22,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-24 22:56:22,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:22,809 INFO L225 Difference]: With dead ends: 546 [2020-09-24 22:56:22,809 INFO L226 Difference]: Without dead ends: 471 [2020-09-24 22:56:22,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:56:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-24 22:56:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 459. [2020-09-24 22:56:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-09-24 22:56:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 480 transitions. [2020-09-24 22:56:22,899 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 480 transitions. Word has length 25 [2020-09-24 22:56:22,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:22,900 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 480 transitions. [2020-09-24 22:56:22,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:56:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 480 transitions. [2020-09-24 22:56:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 22:56:22,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:22,902 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] [2020-09-24 22:56:22,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:56:22,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:22,903 INFO L82 PathProgramCache]: Analyzing trace with hash 775203426, now seen corresponding path program 1 times [2020-09-24 22:56:22,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:22,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392848149] [2020-09-24 22:56:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:23,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:23,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:56:23,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-24 22:56:23,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:56:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:56:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:23,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:23,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:23,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:56:23,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:23,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392848149] [2020-09-24 22:56:23,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:23,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:56:23,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872835359] [2020-09-24 22:56:23,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:56:23,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:23,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:56:23,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:23,365 INFO L87 Difference]: Start difference. First operand 459 states and 480 transitions. Second operand 6 states. [2020-09-24 22:56:24,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:24,597 INFO L93 Difference]: Finished difference Result 469 states and 490 transitions. [2020-09-24 22:56:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:56:24,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-24 22:56:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:24,602 INFO L225 Difference]: With dead ends: 469 [2020-09-24 22:56:24,603 INFO L226 Difference]: Without dead ends: 447 [2020-09-24 22:56:24,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:56:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-24 22:56:24,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2020-09-24 22:56:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-09-24 22:56:24,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 459 transitions. [2020-09-24 22:56:24,650 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 459 transitions. Word has length 30 [2020-09-24 22:56:24,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:24,651 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 459 transitions. [2020-09-24 22:56:24,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:56:24,651 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 459 transitions. [2020-09-24 22:56:24,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 22:56:24,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:24,653 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] [2020-09-24 22:56:24,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:56:24,653 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:24,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:24,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1526563962, now seen corresponding path program 1 times [2020-09-24 22:56:24,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:24,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119404113] [2020-09-24 22:56:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:24,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:24,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:24,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:26,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:26,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:56:26,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:56:26,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1831 [2020-09-24 22:56:26,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:56:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:56:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:56:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:26,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:26,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:26,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:26,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:56:26,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:26,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119404113] [2020-09-24 22:56:26,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:26,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:56:26,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253921742] [2020-09-24 22:56:26,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:56:26,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:26,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:56:26,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:56:26,618 INFO L87 Difference]: Start difference. First operand 447 states and 459 transitions. Second operand 9 states. [2020-09-24 22:56:27,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:27,702 INFO L93 Difference]: Finished difference Result 447 states and 459 transitions. [2020-09-24 22:56:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:56:27,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-09-24 22:56:27,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:27,705 INFO L225 Difference]: With dead ends: 447 [2020-09-24 22:56:27,705 INFO L226 Difference]: Without dead ends: 445 [2020-09-24 22:56:27,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:56:27,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-09-24 22:56:27,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2020-09-24 22:56:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-09-24 22:56:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 457 transitions. [2020-09-24 22:56:27,719 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 457 transitions. Word has length 47 [2020-09-24 22:56:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:27,719 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 457 transitions. [2020-09-24 22:56:27,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:56:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 457 transitions. [2020-09-24 22:56:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:56:27,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:27,722 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] [2020-09-24 22:56:27,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:56:27,723 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash -344421966, now seen corresponding path program 1 times [2020-09-24 22:56:27,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:27,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697632187] [2020-09-24 22:56:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:27,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:28,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:28,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:56:28,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:56:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-09-24 22:56:28,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 22:56:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:56:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:28,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:28,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:28,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:28,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:28,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:56:28,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:28,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:56:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:28,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697632187] [2020-09-24 22:56:28,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:28,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:56:28,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530253645] [2020-09-24 22:56:28,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:56:28,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:28,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:56:28,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:28,653 INFO L87 Difference]: Start difference. First operand 445 states and 457 transitions. Second operand 6 states. [2020-09-24 22:56:29,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:29,814 INFO L93 Difference]: Finished difference Result 445 states and 457 transitions. [2020-09-24 22:56:29,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:56:29,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-24 22:56:29,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:29,817 INFO L225 Difference]: With dead ends: 445 [2020-09-24 22:56:29,818 INFO L226 Difference]: Without dead ends: 433 [2020-09-24 22:56:29,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:56:29,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-09-24 22:56:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2020-09-24 22:56:29,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-09-24 22:56:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 445 transitions. [2020-09-24 22:56:29,830 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 445 transitions. Word has length 52 [2020-09-24 22:56:29,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:29,831 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 445 transitions. [2020-09-24 22:56:29,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:56:29,831 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 445 transitions. [2020-09-24 22:56:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 22:56:29,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:29,833 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] [2020-09-24 22:56:29,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:56:29,834 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:29,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:29,834 INFO L82 PathProgramCache]: Analyzing trace with hash 784264785, now seen corresponding path program 1 times [2020-09-24 22:56:29,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:29,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525176788] [2020-09-24 22:56:29,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:29,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:29,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:30,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:30,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 22:56:30,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-24 22:56:30,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:56:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:56:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:56:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:30,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:30,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:30,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:30,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:56:30,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:30,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525176788] [2020-09-24 22:56:30,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:30,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:56:30,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576957500] [2020-09-24 22:56:30,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:56:30,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:30,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:56:30,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:56:30,468 INFO L87 Difference]: Start difference. First operand 433 states and 445 transitions. Second operand 9 states. [2020-09-24 22:56:32,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:32,652 INFO L93 Difference]: Finished difference Result 644 states and 663 transitions. [2020-09-24 22:56:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:56:32,652 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-24 22:56:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:32,658 INFO L225 Difference]: With dead ends: 644 [2020-09-24 22:56:32,659 INFO L226 Difference]: Without dead ends: 642 [2020-09-24 22:56:32,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:56:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-09-24 22:56:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 431. [2020-09-24 22:56:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-09-24 22:56:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 443 transitions. [2020-09-24 22:56:32,679 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 443 transitions. Word has length 57 [2020-09-24 22:56:32,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:32,680 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 443 transitions. [2020-09-24 22:56:32,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:56:32,680 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 443 transitions. [2020-09-24 22:56:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 22:56:32,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:32,691 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] [2020-09-24 22:56:32,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:56:32,691 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:32,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2053600793, now seen corresponding path program 1 times [2020-09-24 22:56:32,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:32,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124550610] [2020-09-24 22:56:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:32,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:33,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:33,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 22:56:33,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:33,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-24 22:56:33,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:33,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:56:33,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:56:33,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:56:33,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:33,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:33,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:33,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:33,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:33,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:56:33,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:33,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124550610] [2020-09-24 22:56:33,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:33,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:56:33,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840861118] [2020-09-24 22:56:33,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:56:33,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:33,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:56:33,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:56:33,384 INFO L87 Difference]: Start difference. First operand 431 states and 443 transitions. Second operand 9 states. [2020-09-24 22:56:35,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:35,400 INFO L93 Difference]: Finished difference Result 508 states and 523 transitions. [2020-09-24 22:56:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:56:35,401 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-24 22:56:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:35,405 INFO L225 Difference]: With dead ends: 508 [2020-09-24 22:56:35,405 INFO L226 Difference]: Without dead ends: 506 [2020-09-24 22:56:35,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:56:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-09-24 22:56:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 429. [2020-09-24 22:56:35,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-09-24 22:56:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 441 transitions. [2020-09-24 22:56:35,423 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 441 transitions. Word has length 57 [2020-09-24 22:56:35,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:35,424 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 441 transitions. [2020-09-24 22:56:35,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:56:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 441 transitions. [2020-09-24 22:56:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 22:56:35,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:35,426 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] [2020-09-24 22:56:35,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:56:35,426 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:35,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:35,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1921870681, now seen corresponding path program 1 times [2020-09-24 22:56:35,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:35,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845173500] [2020-09-24 22:56:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:35,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:35,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 22:56:35,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:35,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-09-24 22:56:35,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:35,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:56:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:56:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:56:35,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:35,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:36,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:36,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:36,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:36,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:56:36,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:36,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845173500] [2020-09-24 22:56:36,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:36,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:56:36,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718572669] [2020-09-24 22:56:36,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:56:36,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:36,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:56:36,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:56:36,028 INFO L87 Difference]: Start difference. First operand 429 states and 441 transitions. Second operand 9 states. [2020-09-24 22:56:38,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:38,262 INFO L93 Difference]: Finished difference Result 602 states and 621 transitions. [2020-09-24 22:56:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:56:38,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-24 22:56:38,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:38,267 INFO L225 Difference]: With dead ends: 602 [2020-09-24 22:56:38,267 INFO L226 Difference]: Without dead ends: 600 [2020-09-24 22:56:38,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:56:38,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-09-24 22:56:38,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 427. [2020-09-24 22:56:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-09-24 22:56:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 439 transitions. [2020-09-24 22:56:38,288 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 439 transitions. Word has length 57 [2020-09-24 22:56:38,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:38,291 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 439 transitions. [2020-09-24 22:56:38,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:56:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 439 transitions. [2020-09-24 22:56:38,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 22:56:38,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:38,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:38,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:56:38,293 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:38,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:38,296 INFO L82 PathProgramCache]: Analyzing trace with hash -382650347, now seen corresponding path program 1 times [2020-09-24 22:56:38,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:38,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562340170] [2020-09-24 22:56:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:38,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:39,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:39,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:56:39,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:39,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-09-24 22:56:39,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:39,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:56:39,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:56:39,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:56:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:39,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:39,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:39,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:39,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:56:39,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:39,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562340170] [2020-09-24 22:56:39,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:39,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:56:39,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457967190] [2020-09-24 22:56:39,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:56:39,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:39,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:56:39,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:56:39,570 INFO L87 Difference]: Start difference. First operand 427 states and 439 transitions. Second operand 10 states. [2020-09-24 22:56:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:42,130 INFO L93 Difference]: Finished difference Result 622 states and 641 transitions. [2020-09-24 22:56:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:56:42,131 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-09-24 22:56:42,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:42,135 INFO L225 Difference]: With dead ends: 622 [2020-09-24 22:56:42,135 INFO L226 Difference]: Without dead ends: 620 [2020-09-24 22:56:42,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:56:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-09-24 22:56:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 472. [2020-09-24 22:56:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-09-24 22:56:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 489 transitions. [2020-09-24 22:56:42,150 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 489 transitions. Word has length 62 [2020-09-24 22:56:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:42,151 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 489 transitions. [2020-09-24 22:56:42,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:56:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 489 transitions. [2020-09-24 22:56:42,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 22:56:42,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:42,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:42,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:56:42,153 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:42,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:42,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1546196018, now seen corresponding path program 1 times [2020-09-24 22:56:42,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:42,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845212151] [2020-09-24 22:56:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:42,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:42,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:43,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:43,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:56:43,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:43,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1061 [2020-09-24 22:56:43,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:56:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:56:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:56:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:43,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:43,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:43,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:56:43,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:43,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:43,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845212151] [2020-09-24 22:56:43,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:43,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:56:43,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824417061] [2020-09-24 22:56:43,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:56:43,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:43,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:56:43,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:56:43,403 INFO L87 Difference]: Start difference. First operand 472 states and 489 transitions. Second operand 10 states. [2020-09-24 22:56:45,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:45,721 INFO L93 Difference]: Finished difference Result 486 states and 501 transitions. [2020-09-24 22:56:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:56:45,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-09-24 22:56:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:45,724 INFO L225 Difference]: With dead ends: 486 [2020-09-24 22:56:45,724 INFO L226 Difference]: Without dead ends: 474 [2020-09-24 22:56:45,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:56:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-09-24 22:56:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 472. [2020-09-24 22:56:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-09-24 22:56:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 488 transitions. [2020-09-24 22:56:45,736 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 488 transitions. Word has length 62 [2020-09-24 22:56:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:45,737 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 488 transitions. [2020-09-24 22:56:45,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:56:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 488 transitions. [2020-09-24 22:56:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 22:56:45,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:45,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:45,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:56:45,738 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:45,739 INFO L82 PathProgramCache]: Analyzing trace with hash 781872345, now seen corresponding path program 1 times [2020-09-24 22:56:45,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:45,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376177812] [2020-09-24 22:56:45,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:46,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:56:46,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 22:56:46,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:56:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:56:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:56:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:46,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:46,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:46,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:56:46,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:46,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:46,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376177812] [2020-09-24 22:56:46,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:46,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:56:46,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121182203] [2020-09-24 22:56:46,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:56:46,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:46,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:56:46,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:56:46,998 INFO L87 Difference]: Start difference. First operand 472 states and 488 transitions. Second operand 10 states. [2020-09-24 22:56:49,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:49,334 INFO L93 Difference]: Finished difference Result 582 states and 600 transitions. [2020-09-24 22:56:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:56:49,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-09-24 22:56:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:49,338 INFO L225 Difference]: With dead ends: 582 [2020-09-24 22:56:49,338 INFO L226 Difference]: Without dead ends: 580 [2020-09-24 22:56:49,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:56:49,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-09-24 22:56:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 472. [2020-09-24 22:56:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-09-24 22:56:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 487 transitions. [2020-09-24 22:56:49,351 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 487 transitions. Word has length 62 [2020-09-24 22:56:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:49,352 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 487 transitions. [2020-09-24 22:56:49,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:56:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 487 transitions. [2020-09-24 22:56:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 22:56:49,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:49,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:49,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:56:49,354 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:49,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1199808863, now seen corresponding path program 1 times [2020-09-24 22:56:49,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:49,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392049903] [2020-09-24 22:56:49,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:49,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:49,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:49,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:51,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 22:56:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:56:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:56:54,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:56:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-24 22:56:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:56:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:54,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:54,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:54,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:54,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:54,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:56:54,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:54,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392049903] [2020-09-24 22:56:54,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:54,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:56:54,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947930307] [2020-09-24 22:56:54,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:56:54,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:54,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:56:54,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:56:54,500 INFO L87 Difference]: Start difference. First operand 472 states and 487 transitions. Second operand 9 states. [2020-09-24 22:56:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:56,363 INFO L93 Difference]: Finished difference Result 556 states and 575 transitions. [2020-09-24 22:56:56,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:56:56,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-24 22:56:56,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:56,367 INFO L225 Difference]: With dead ends: 556 [2020-09-24 22:56:56,367 INFO L226 Difference]: Without dead ends: 554 [2020-09-24 22:56:56,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:56:56,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-09-24 22:56:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 470. [2020-09-24 22:56:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-09-24 22:56:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 485 transitions. [2020-09-24 22:56:56,379 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 485 transitions. Word has length 70 [2020-09-24 22:56:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:56,380 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 485 transitions. [2020-09-24 22:56:56,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:56:56,380 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 485 transitions. [2020-09-24 22:56:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 22:56:56,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:56,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:56,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:56:56,382 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:56,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:56,382 INFO L82 PathProgramCache]: Analyzing trace with hash 886846446, now seen corresponding path program 1 times [2020-09-24 22:56:56,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:56,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794708557] [2020-09-24 22:56:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:56,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:57,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 22:56:59,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:56:59,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3489 [2020-09-24 22:56:59,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-24 22:56:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:56:59,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:56:59,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:56:59,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:59,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:59,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794708557] [2020-09-24 22:56:59,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:59,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:56:59,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093768380] [2020-09-24 22:56:59,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:56:59,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:59,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:56:59,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:59,948 INFO L87 Difference]: Start difference. First operand 470 states and 485 transitions. Second operand 6 states. [2020-09-24 22:57:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:01,106 INFO L93 Difference]: Finished difference Result 470 states and 485 transitions. [2020-09-24 22:57:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:57:01,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-09-24 22:57:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:01,109 INFO L225 Difference]: With dead ends: 470 [2020-09-24 22:57:01,109 INFO L226 Difference]: Without dead ends: 399 [2020-09-24 22:57:01,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:57:01,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-09-24 22:57:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2020-09-24 22:57:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-09-24 22:57:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 410 transitions. [2020-09-24 22:57:01,127 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 410 transitions. Word has length 75 [2020-09-24 22:57:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:01,127 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 410 transitions. [2020-09-24 22:57:01,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:57:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 410 transitions. [2020-09-24 22:57:01,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 22:57:01,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:01,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:01,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 22:57:01,129 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:01,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:01,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1128385369, now seen corresponding path program 1 times [2020-09-24 22:57:01,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:01,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897616802] [2020-09-24 22:57:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:05,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:05,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 22:57:05,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:57:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4474 [2020-09-24 22:57:05,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:57:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 22:57:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:57:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:05,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:05,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:05,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:57:05,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:57:05,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:05,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:05,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897616802] [2020-09-24 22:57:05,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:57:05,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:57:05,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452180368] [2020-09-24 22:57:05,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:57:05,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:05,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:57:05,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:57:05,804 INFO L87 Difference]: Start difference. First operand 399 states and 410 transitions. Second operand 10 states.