/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-industry-pattern/array_ptr_partial_init.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:46:24,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:46:24,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:46:24,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:46:24,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:46:24,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:46:24,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:46:24,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:46:24,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:46:24,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:46:24,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:46:24,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:46:24,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:46:24,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:46:24,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:46:24,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:46:24,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:46:24,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:46:24,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:46:24,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:46:24,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:46:24,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:46:24,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:46:24,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:46:24,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:46:24,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:46:24,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:46:24,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:46:24,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:46:24,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:46:24,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:46:24,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:46:24,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:46:24,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:46:24,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:46:24,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:46:24,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:46:24,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:46:24,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:46:24,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:46:24,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:46:24,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:46:25,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:46:25,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:46:25,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:46:25,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:46:25,024 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:46:25,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:46:25,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:46:25,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:46:25,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:46:25,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:46:25,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:46:25,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:46:25,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:46:25,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:46:25,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:46:25,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:46:25,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:46:25,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:46:25,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:46:25,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:46:25,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:46:25,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:46:25,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:46:25,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:46:25,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:46:25,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:46:25,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:46:25,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:46:25,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:46:25,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:46:25,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:46:25,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:46:25,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:46:25,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:46:25,561 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:46:25,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_ptr_partial_init.i [2020-10-27 14:46:25,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1edc922/f460159a80c04d82a6690d2437e7b059/FLAG633572bd9 [2020-10-27 14:46:26,415 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:46:26,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_ptr_partial_init.i [2020-10-27 14:46:26,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1edc922/f460159a80c04d82a6690d2437e7b059/FLAG633572bd9 [2020-10-27 14:46:26,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1edc922/f460159a80c04d82a6690d2437e7b059 [2020-10-27 14:46:26,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:46:26,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:46:26,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:46:26,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:46:26,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:46:26,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:46:26" (1/1) ... [2020-10-27 14:46:26,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac55ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:26, skipping insertion in model container [2020-10-27 14:46:26,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:46:26" (1/1) ... [2020-10-27 14:46:26,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:46:26,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:46:27,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:46:27,023 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:46:27,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:46:27,066 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:46:27,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:27 WrapperNode [2020-10-27 14:46:27,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:46:27,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:46:27,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:46:27,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:46:27,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:27" (1/1) ... [2020-10-27 14:46:27,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:27" (1/1) ... [2020-10-27 14:46:27,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:27" (1/1) ... [2020-10-27 14:46:27,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:27" (1/1) ... [2020-10-27 14:46:27,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:27" (1/1) ... [2020-10-27 14:46:27,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:27" (1/1) ... [2020-10-27 14:46:27,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:27" (1/1) ... [2020-10-27 14:46:27,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:46:27,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:46:27,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:46:27,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:46:27,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:46:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:46:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:46:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:46:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:46:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:46:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:46:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:46:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:46:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:46:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:46:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:46:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:46:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:46:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:46:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:46:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 14:46:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 14:46:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:46:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:46:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:46:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:46:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:46:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:46:27,754 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:46:27,754 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:46:27,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:46:27 BoogieIcfgContainer [2020-10-27 14:46:27,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:46:27,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:46:27,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:46:27,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:46:27,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:46:26" (1/3) ... [2020-10-27 14:46:27,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573c3ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:46:27, skipping insertion in model container [2020-10-27 14:46:27,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:46:27" (2/3) ... [2020-10-27 14:46:27,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573c3ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:46:27, skipping insertion in model container [2020-10-27 14:46:27,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:46:27" (3/3) ... [2020-10-27 14:46:27,774 INFO L111 eAbstractionObserver]: Analyzing ICFG array_ptr_partial_init.i [2020-10-27 14:46:27,788 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:46:27,794 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:46:27,829 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:46:27,871 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:46:27,871 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:46:27,871 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:46:27,872 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:46:27,872 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:46:27,872 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:46:27,872 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:46:27,872 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:46:27,898 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-27 14:46:27,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 14:46:27,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:27,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:27,907 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:27,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:27,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1906025394, now seen corresponding path program 1 times [2020-10-27 14:46:27,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:27,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104800147] [2020-10-27 14:46:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:28,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:28,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:46:28,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:46:28,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-27 14:46:28,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 14:46:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:28,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:46:28,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:28,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:28,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:28,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 14:46:28,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:46:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:46:28,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104800147] [2020-10-27 14:46:28,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:46:28,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:46:28,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380494949] [2020-10-27 14:46:28,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:46:28,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:28,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:46:28,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:46:28,641 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-27 14:46:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:28,755 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-27 14:46:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:46:28,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-27 14:46:28,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:28,765 INFO L225 Difference]: With dead ends: 53 [2020-10-27 14:46:28,765 INFO L226 Difference]: Without dead ends: 24 [2020-10-27 14:46:28,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:46:28,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-27 14:46:28,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-27 14:46:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 14:46:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-27 14:46:28,811 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2020-10-27 14:46:28,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:28,812 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-27 14:46:28,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:46:28,812 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-27 14:46:28,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 14:46:28,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:28,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:28,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:46:28,814 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:28,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:28,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1754426942, now seen corresponding path program 1 times [2020-10-27 14:46:28,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:28,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250757330] [2020-10-27 14:46:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:28,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:28,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:29,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:29,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:46:29,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:46:29,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-27 14:46:29,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:29,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:46:29,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:46:29,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:46:29,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:29,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:29,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:29,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:29,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:46:29,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:29,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:46:29,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250757330] [2020-10-27 14:46:29,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:46:29,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:46:29,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482107326] [2020-10-27 14:46:29,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:46:29,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:29,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:46:29,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:46:29,134 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2020-10-27 14:46:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:29,332 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-10-27 14:46:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:46:29,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-27 14:46:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:29,335 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:46:29,335 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:46:29,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:46:29,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:46:29,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2020-10-27 14:46:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:46:29,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-27 14:46:29,356 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2020-10-27 14:46:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:29,358 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-27 14:46:29,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:46:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-27 14:46:29,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 14:46:29,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:29,360 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] [2020-10-27 14:46:29,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:46:29,361 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:29,362 INFO L82 PathProgramCache]: Analyzing trace with hash -999640386, now seen corresponding path program 1 times [2020-10-27 14:46:29,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:29,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51609186] [2020-10-27 14:46:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:29,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:30,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:30,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 14:46:30,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:46:30,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-10-27 14:46:30,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:30,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:46:30,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:46:30,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:46:30,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:30,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:30,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:30,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:30,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:30,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:30,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:46:30,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:30,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:30,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:30,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:30,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:46:30,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51609186] [2020-10-27 14:46:30,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:30,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:46:30,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010396254] [2020-10-27 14:46:30,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:46:30,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:30,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:46:30,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:46:30,801 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-27 14:46:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:31,085 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-10-27 14:46:31,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:46:31,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 14:46:31,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:31,088 INFO L225 Difference]: With dead ends: 73 [2020-10-27 14:46:31,088 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 14:46:31,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:46:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 14:46:31,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-10-27 14:46:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 14:46:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-27 14:46:31,106 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2020-10-27 14:46:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:31,106 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-27 14:46:31,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:46:31,106 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-27 14:46:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:46:31,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:31,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:31,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:46:31,110 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:31,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1354504774, now seen corresponding path program 2 times [2020-10-27 14:46:31,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:31,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646352740] [2020-10-27 14:46:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:31,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:31,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:31,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:33,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:33,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:46:33,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:46:33,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2768 [2020-10-27 14:46:33,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:46:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:46:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 14:46:33,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:34,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:34,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:34,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:34,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:46:34,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:34,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:34,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:34,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:46:34,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646352740] [2020-10-27 14:46:34,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:34,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:46:34,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219747308] [2020-10-27 14:46:34,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:46:34,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:34,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:46:34,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:46:34,096 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 9 states. [2020-10-27 14:46:34,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:34,654 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-27 14:46:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:46:34,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-27 14:46:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:34,655 INFO L225 Difference]: With dead ends: 42 [2020-10-27 14:46:34,656 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:46:34,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:46:34,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:46:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-27 14:46:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 14:46:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-27 14:46:34,666 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 25 [2020-10-27 14:46:34,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:34,667 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-27 14:46:34,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:46:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-27 14:46:34,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 14:46:34,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:34,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:34,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:46:34,669 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:34,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1553956332, now seen corresponding path program 1 times [2020-10-27 14:46:34,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:34,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161489063] [2020-10-27 14:46:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:34,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:34,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:35,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:39,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:39,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 14:46:39,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:46:39,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:46:39,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:46:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:46:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:46:39,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:39,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:39,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:46:39,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:39,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:39,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:46:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:39,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:39,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:39,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:39,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:46:39,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:39,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:46:39,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161489063] [2020-10-27 14:46:39,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:39,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:46:39,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475257672] [2020-10-27 14:46:39,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:46:39,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:39,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:46:39,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:46:39,817 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 6 states. [2020-10-27 14:46:40,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:40,112 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-27 14:46:40,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:46:40,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-27 14:46:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:40,114 INFO L225 Difference]: With dead ends: 93 [2020-10-27 14:46:40,114 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 14:46:40,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:46:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 14:46:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 40. [2020-10-27 14:46:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 14:46:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-10-27 14:46:40,126 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 33 [2020-10-27 14:46:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:40,126 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-10-27 14:46:40,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:46:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-10-27 14:46:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:46:40,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:40,128 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:40,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:46:40,128 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:40,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1927673072, now seen corresponding path program 2 times [2020-10-27 14:46:40,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:40,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424570487] [2020-10-27 14:46:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:40,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:40,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:40,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:42,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:45,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:45,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:46:45,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:46:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:46:45,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:46:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:46:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:46:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:45,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:45,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:45,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:45,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:46:45,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:45,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:46:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:45,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:46:45,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:45,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:45,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:46:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 14:46:45,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424570487] [2020-10-27 14:46:45,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:45,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:46:45,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922687147] [2020-10-27 14:46:45,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:46:45,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:45,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:46:45,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:46:45,309 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 7 states. [2020-10-27 14:46:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:45,748 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-27 14:46:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:46:45,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-27 14:46:45,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:45,750 INFO L225 Difference]: With dead ends: 111 [2020-10-27 14:46:45,750 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 14:46:45,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:46:45,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 14:46:45,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 44. [2020-10-27 14:46:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 14:46:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-10-27 14:46:45,760 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 37 [2020-10-27 14:46:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:45,761 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-10-27 14:46:45,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:46:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-10-27 14:46:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:46:45,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:45,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:45,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:46:45,763 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:45,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:45,763 INFO L82 PathProgramCache]: Analyzing trace with hash 341026316, now seen corresponding path program 3 times [2020-10-27 14:46:45,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:45,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427946291] [2020-10-27 14:46:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:45,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:50,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:46:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:46:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:46:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:46:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:46:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:46:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:50,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:50,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:50,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:50,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:50,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:50,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:46:50,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:50,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:50,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:46:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:50,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:50,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:50,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:50,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:50,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:50,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 14:46:50,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427946291] [2020-10-27 14:46:50,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:50,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:46:50,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514789164] [2020-10-27 14:46:50,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:46:50,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:50,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:46:50,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:46:50,896 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 8 states. [2020-10-27 14:46:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:51,345 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-10-27 14:46:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:46:51,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-27 14:46:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:51,347 INFO L225 Difference]: With dead ends: 129 [2020-10-27 14:46:51,348 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 14:46:51,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:46:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 14:46:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 48. [2020-10-27 14:46:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 14:46:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-27 14:46:51,359 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 41 [2020-10-27 14:46:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:51,360 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-27 14:46:51,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:46:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-27 14:46:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 14:46:51,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:51,361 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:51,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:46:51,361 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:51,362 INFO L82 PathProgramCache]: Analyzing trace with hash 557339400, now seen corresponding path program 4 times [2020-10-27 14:46:51,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:51,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995253427] [2020-10-27 14:46:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:51,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:53,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:56,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:56,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 14:46:56,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:46:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:46:56,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:46:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:46:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:46:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:56,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:56,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:56,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:56,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:56,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:46:56,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:56,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:56,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:56,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:46:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:56,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:56,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:56,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:46:56,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:46:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:46:56,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:56,632 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-27 14:46:56,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995253427] [2020-10-27 14:46:56,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:56,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:46:56,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263167314] [2020-10-27 14:46:56,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:46:56,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:56,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:46:56,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:46:56,638 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 11 states. [2020-10-27 14:46:57,280 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-27 14:46:57,416 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-27 14:46:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:57,562 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-10-27 14:46:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:46:57,563 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-27 14:46:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:57,565 INFO L225 Difference]: With dead ends: 62 [2020-10-27 14:46:57,565 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 14:46:57,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:46:57,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 14:46:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-27 14:46:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:46:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-27 14:46:57,577 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 45 [2020-10-27 14:46:57,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:57,579 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-27 14:46:57,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:46:57,579 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-27 14:46:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:46:57,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:57,581 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:46:57,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:46:57,581 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:57,582 INFO L82 PathProgramCache]: Analyzing trace with hash 829538658, now seen corresponding path program 5 times [2020-10-27 14:46:57,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:57,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743676211] [2020-10-27 14:46:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:57,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:57,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:59,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:00,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:01,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:02,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:02,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 14:47:02,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:47:02,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:47:02,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:47:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:47:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:47:02,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:02,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:02,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:02,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:02,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:47:02,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:02,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:47:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:02,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:02,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:02,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:02,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:02,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:02,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:47:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:02,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:02,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:02,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:02,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:02,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-27 14:47:02,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743676211] [2020-10-27 14:47:02,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:02,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:47:02,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150902162] [2020-10-27 14:47:02,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:47:02,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:02,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:47:02,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:47:02,761 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 9 states. [2020-10-27 14:47:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:03,436 INFO L93 Difference]: Finished difference Result 151 states and 156 transitions. [2020-10-27 14:47:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:47:03,437 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-27 14:47:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:03,438 INFO L225 Difference]: With dead ends: 151 [2020-10-27 14:47:03,439 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 14:47:03,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:47:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 14:47:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 60. [2020-10-27 14:47:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 14:47:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-10-27 14:47:03,465 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 53 [2020-10-27 14:47:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:03,466 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-10-27 14:47:03,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:47:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-10-27 14:47:03,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:47:03,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:03,471 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:03,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:47:03,472 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:03,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:03,473 INFO L82 PathProgramCache]: Analyzing trace with hash -244595618, now seen corresponding path program 6 times [2020-10-27 14:47:03,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:03,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007673069] [2020-10-27 14:47:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:03,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:03,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:05,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:08,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:08,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:08,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:47:08,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:47:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-27 14:47:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:47:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:47:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:47:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:08,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:08,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:08,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:08,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:47:08,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:08,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:08,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:08,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:08,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:47:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:08,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:08,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:08,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:08,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:08,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:08,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:08,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:08,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:47:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:08,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:08,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:08,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:08,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:08,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:08,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:08,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-27 14:47:08,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007673069] [2020-10-27 14:47:08,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:08,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:47:08,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990910665] [2020-10-27 14:47:08,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:47:08,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:47:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:47:08,814 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 10 states. [2020-10-27 14:47:09,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:09,582 INFO L93 Difference]: Finished difference Result 169 states and 174 transitions. [2020-10-27 14:47:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:47:09,583 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-27 14:47:09,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:09,584 INFO L225 Difference]: With dead ends: 169 [2020-10-27 14:47:09,584 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 14:47:09,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:47:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 14:47:09,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 64. [2020-10-27 14:47:09,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:47:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-10-27 14:47:09,599 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 57 [2020-10-27 14:47:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:09,599 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-10-27 14:47:09,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:47:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-10-27 14:47:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 14:47:09,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:09,600 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:09,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:47:09,601 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:09,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:09,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1790237018, now seen corresponding path program 7 times [2020-10-27 14:47:09,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:09,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599235775] [2020-10-27 14:47:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:09,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:10,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:14,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:14,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:47:14,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:47:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:47:14,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:47:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:47:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:47:14,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:14,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:14,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:14,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:14,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:14,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:14,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:14,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:14,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:47:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:14,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:14,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:14,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:14,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:14,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:14,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:47:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:14,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:14,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:14,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:14,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:14,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:14,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-27 14:47:14,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599235775] [2020-10-27 14:47:14,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:14,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:47:14,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797187530] [2020-10-27 14:47:14,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:47:14,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:14,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:47:14,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:47:14,786 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 11 states. [2020-10-27 14:47:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:15,614 INFO L93 Difference]: Finished difference Result 187 states and 192 transitions. [2020-10-27 14:47:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:47:15,614 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-10-27 14:47:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:15,616 INFO L225 Difference]: With dead ends: 187 [2020-10-27 14:47:15,616 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 14:47:15,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:47:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 14:47:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 68. [2020-10-27 14:47:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:47:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-10-27 14:47:15,642 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 61 [2020-10-27 14:47:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:15,642 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-10-27 14:47:15,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:47:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-10-27 14:47:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 14:47:15,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:15,645 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:15,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:47:15,645 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:15,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:15,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1324875862, now seen corresponding path program 8 times [2020-10-27 14:47:15,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:15,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454520582] [2020-10-27 14:47:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:15,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:15,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:15,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:20,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:20,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 14:47:20,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:47:20,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 14:47:20,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:47:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:47:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:47:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:20,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:20,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:20,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:20,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:20,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:47:20,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:47:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:20,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:20,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:20,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:20,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:20,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:20,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:20,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:47:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:20,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:20,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:20,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:20,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:20,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:20,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 4 proven. 64 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 14:47:20,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454520582] [2020-10-27 14:47:20,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:20,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:47:20,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945648889] [2020-10-27 14:47:20,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:47:20,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:20,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:47:20,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:47:20,900 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 12 states. [2020-10-27 14:47:21,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:21,917 INFO L93 Difference]: Finished difference Result 205 states and 210 transitions. [2020-10-27 14:47:21,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:47:21,917 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-27 14:47:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:21,919 INFO L225 Difference]: With dead ends: 205 [2020-10-27 14:47:21,919 INFO L226 Difference]: Without dead ends: 160 [2020-10-27 14:47:21,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:47:21,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-27 14:47:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 72. [2020-10-27 14:47:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:47:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-27 14:47:21,954 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 65 [2020-10-27 14:47:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:21,955 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-27 14:47:21,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:47:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-27 14:47:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 14:47:21,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:21,956 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:21,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:47:21,956 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:21,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:21,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1319093934, now seen corresponding path program 9 times [2020-10-27 14:47:21,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:21,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490594247] [2020-10-27 14:47:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:23,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:27,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:27,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 14:47:27,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:47:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-27 14:47:27,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:47:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:47:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:47:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:27,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:27,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:27,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:27,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:47:27,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:27,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:27,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:47:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:27,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:27,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:27,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:27,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:47:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:27,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:27,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:27,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:27,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:27,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:27,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 81 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 14:47:27,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490594247] [2020-10-27 14:47:27,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:27,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:47:27,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388705935] [2020-10-27 14:47:27,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:47:27,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:27,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:47:27,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:47:27,335 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 13 states. [2020-10-27 14:47:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:28,379 INFO L93 Difference]: Finished difference Result 223 states and 228 transitions. [2020-10-27 14:47:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:47:28,380 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-27 14:47:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:28,382 INFO L225 Difference]: With dead ends: 223 [2020-10-27 14:47:28,382 INFO L226 Difference]: Without dead ends: 176 [2020-10-27 14:47:28,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:47:28,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-27 14:47:28,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 76. [2020-10-27 14:47:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 14:47:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-10-27 14:47:28,395 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 69 [2020-10-27 14:47:28,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:28,395 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-10-27 14:47:28,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:47:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-10-27 14:47:28,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:47:28,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:28,396 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:28,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:47:28,397 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:28,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:28,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2036825010, now seen corresponding path program 10 times [2020-10-27 14:47:28,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:28,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839872555] [2020-10-27 14:47:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:28,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:28,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:29,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:33,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:33,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 14:47:33,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:47:33,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 14:47:33,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:47:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:47:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:47:33,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:33,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:33,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:33,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:47:33,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:33,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:33,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:47:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:33,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:33,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:33,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:33,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:33,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:33,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:47:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:33,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:33,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:33,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:33,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:33,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 14:47:33,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839872555] [2020-10-27 14:47:33,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:33,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:47:33,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41662884] [2020-10-27 14:47:33,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:47:33,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:33,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:47:33,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:47:33,699 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 14 states. [2020-10-27 14:47:34,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:34,871 INFO L93 Difference]: Finished difference Result 241 states and 246 transitions. [2020-10-27 14:47:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:47:34,872 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-10-27 14:47:34,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:34,873 INFO L225 Difference]: With dead ends: 241 [2020-10-27 14:47:34,873 INFO L226 Difference]: Without dead ends: 192 [2020-10-27 14:47:34,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:47:34,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-27 14:47:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 80. [2020-10-27 14:47:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:47:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2020-10-27 14:47:34,888 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 73 [2020-10-27 14:47:34,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:34,889 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2020-10-27 14:47:34,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:47:34,889 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2020-10-27 14:47:34,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 14:47:34,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:34,890 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:34,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:47:34,890 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:34,891 INFO L82 PathProgramCache]: Analyzing trace with hash 617341258, now seen corresponding path program 11 times [2020-10-27 14:47:34,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:34,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298782454] [2020-10-27 14:47:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:34,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:39,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:39,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:47:39,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:47:39,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:47:39,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:47:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:47:39,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:47:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:40,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:40,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:40,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:40,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:40,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:40,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:47:40,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:47:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:40,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:40,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:40,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:47:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:40,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:40,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:40,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:40,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 4 proven. 121 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-27 14:47:40,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298782454] [2020-10-27 14:47:40,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:40,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:47:40,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089784347] [2020-10-27 14:47:40,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:47:40,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:40,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:47:40,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:47:40,204 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 15 states. [2020-10-27 14:47:41,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:41,569 INFO L93 Difference]: Finished difference Result 259 states and 264 transitions. [2020-10-27 14:47:41,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:47:41,570 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 77 [2020-10-27 14:47:41,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:41,576 INFO L225 Difference]: With dead ends: 259 [2020-10-27 14:47:41,577 INFO L226 Difference]: Without dead ends: 208 [2020-10-27 14:47:41,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:47:41,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-27 14:47:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 84. [2020-10-27 14:47:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:47:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-10-27 14:47:41,591 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 77 [2020-10-27 14:47:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:41,591 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-10-27 14:47:41,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:47:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-10-27 14:47:41,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 14:47:41,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:41,592 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:41,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:47:41,593 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:41,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:41,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1012576186, now seen corresponding path program 12 times [2020-10-27 14:47:41,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:41,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576802338] [2020-10-27 14:47:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:41,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:43,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:45,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:47,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:47,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 14:47:47,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:47:47,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5838 [2020-10-27 14:47:47,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:47:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:47:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:47:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:47,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:47,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:47,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:47:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:47,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:47:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:47,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:47,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:47,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:47,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:47,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:47:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:47,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:47,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:47,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:47,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 4 proven. 144 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-27 14:47:47,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576802338] [2020-10-27 14:47:47,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:47,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:47:47,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990927426] [2020-10-27 14:47:47,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:47:47,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:47,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:47:47,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:47:47,714 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 16 states. [2020-10-27 14:47:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:49,039 INFO L93 Difference]: Finished difference Result 277 states and 282 transitions. [2020-10-27 14:47:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:47:49,040 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 81 [2020-10-27 14:47:49,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:49,043 INFO L225 Difference]: With dead ends: 277 [2020-10-27 14:47:49,043 INFO L226 Difference]: Without dead ends: 224 [2020-10-27 14:47:49,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:47:49,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-27 14:47:49,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 88. [2020-10-27 14:47:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:47:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-10-27 14:47:49,057 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 81 [2020-10-27 14:47:49,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:49,057 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-10-27 14:47:49,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:47:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-10-27 14:47:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:47:49,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:49,058 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:49,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:47:49,059 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:49,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:49,059 INFO L82 PathProgramCache]: Analyzing trace with hash -61877950, now seen corresponding path program 13 times [2020-10-27 14:47:49,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:49,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102838656] [2020-10-27 14:47:49,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:54,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:54,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 14:47:54,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:47:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5458 [2020-10-27 14:47:54,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:47:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:47:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:47:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:54,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:54,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:54,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:54,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:54,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:54,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:54,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:54,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:54,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:47:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:54,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:54,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:54,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:54,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:54,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:47:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:54,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:54,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:54,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:54,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:54,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:54,813 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 4 proven. 169 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-27 14:47:54,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102838656] [2020-10-27 14:47:54,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:54,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:47:54,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100639319] [2020-10-27 14:47:54,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:47:54,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:54,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:47:54,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:47:54,815 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 17 states. [2020-10-27 14:47:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:56,308 INFO L93 Difference]: Finished difference Result 295 states and 300 transitions. [2020-10-27 14:47:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:47:56,309 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2020-10-27 14:47:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:56,311 INFO L225 Difference]: With dead ends: 295 [2020-10-27 14:47:56,312 INFO L226 Difference]: Without dead ends: 240 [2020-10-27 14:47:56,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:47:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-27 14:47:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 92. [2020-10-27 14:47:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:47:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-10-27 14:47:56,337 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 85 [2020-10-27 14:47:56,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:56,337 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-10-27 14:47:56,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:47:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-10-27 14:47:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 14:47:56,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:56,338 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:47:56,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:47:56,339 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:56,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:56,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1232495678, now seen corresponding path program 14 times [2020-10-27 14:47:56,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:56,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869367615] [2020-10-27 14:47:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:57,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:59,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:01,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:01,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:48:01,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:48:01,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:48:01,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:48:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:48:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:48:01,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:01,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:01,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:01,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:01,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:01,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:48:01,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:01,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:48:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:01,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:01,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:01,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:01,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:01,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:01,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:48:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:01,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:01,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:01,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:01,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:01,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:01,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 4 proven. 196 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2020-10-27 14:48:01,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869367615] [2020-10-27 14:48:01,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:01,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:48:01,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184124768] [2020-10-27 14:48:01,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:48:01,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:01,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:48:01,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:48:01,663 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 18 states. [2020-10-27 14:48:03,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:03,282 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2020-10-27 14:48:03,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:48:03,282 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-10-27 14:48:03,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:03,285 INFO L225 Difference]: With dead ends: 313 [2020-10-27 14:48:03,285 INFO L226 Difference]: Without dead ends: 256 [2020-10-27 14:48:03,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:48:03,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-27 14:48:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 96. [2020-10-27 14:48:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:48:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2020-10-27 14:48:03,307 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 89 [2020-10-27 14:48:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:03,307 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2020-10-27 14:48:03,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:48:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2020-10-27 14:48:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:48:03,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:03,309 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:03,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:48:03,309 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:03,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2025584326, now seen corresponding path program 15 times [2020-10-27 14:48:03,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:03,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876461683] [2020-10-27 14:48:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:10,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:10,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 14:48:10,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:48:10,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7281 [2020-10-27 14:48:10,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:10,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:48:10,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:48:10,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:48:10,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:10,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:10,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:10,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:48:10,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:48:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:10,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:10,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:10,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:48:10,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:10,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:48:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:10,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:10,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:10,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:10,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:10,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 4 proven. 225 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-27 14:48:10,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876461683] [2020-10-27 14:48:10,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:10,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:48:10,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562938174] [2020-10-27 14:48:10,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:48:10,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:10,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:48:10,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:48:10,940 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 19 states. [2020-10-27 14:48:12,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:12,714 INFO L93 Difference]: Finished difference Result 331 states and 336 transitions. [2020-10-27 14:48:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:48:12,715 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 93 [2020-10-27 14:48:12,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:12,717 INFO L225 Difference]: With dead ends: 331 [2020-10-27 14:48:12,717 INFO L226 Difference]: Without dead ends: 272 [2020-10-27 14:48:12,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:48:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-27 14:48:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 100. [2020-10-27 14:48:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:48:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2020-10-27 14:48:12,739 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 93 [2020-10-27 14:48:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:12,740 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2020-10-27 14:48:12,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:48:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2020-10-27 14:48:12,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 14:48:12,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:12,741 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:12,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:48:12,741 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:12,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:12,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1935917110, now seen corresponding path program 16 times [2020-10-27 14:48:12,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:12,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505779652] [2020-10-27 14:48:12,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:12,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:12,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:14,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:21,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:21,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 14:48:21,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:48:21,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8339 [2020-10-27 14:48:21,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:48:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:48:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:48:21,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:21,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:21,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:21,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:21,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:21,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:48:21,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:21,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:48:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:21,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:21,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:21,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:21,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:21,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:21,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:21,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:21,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:21,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:21,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:21,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:48:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:21,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:21,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:21,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:21,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 4 proven. 256 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-27 14:48:21,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505779652] [2020-10-27 14:48:21,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:21,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:48:21,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012074386] [2020-10-27 14:48:21,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:48:21,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:21,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:48:21,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:48:21,445 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 20 states. [2020-10-27 14:48:23,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:23,300 INFO L93 Difference]: Finished difference Result 349 states and 354 transitions. [2020-10-27 14:48:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:48:23,301 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 97 [2020-10-27 14:48:23,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:23,303 INFO L225 Difference]: With dead ends: 349 [2020-10-27 14:48:23,303 INFO L226 Difference]: Without dead ends: 288 [2020-10-27 14:48:23,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:48:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-27 14:48:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 104. [2020-10-27 14:48:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:48:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2020-10-27 14:48:23,322 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 97 [2020-10-27 14:48:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:23,322 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2020-10-27 14:48:23,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:48:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2020-10-27 14:48:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:48:23,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:23,323 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:23,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:48:23,324 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:23,324 INFO L82 PathProgramCache]: Analyzing trace with hash 755009842, now seen corresponding path program 17 times [2020-10-27 14:48:23,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:23,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548851848] [2020-10-27 14:48:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:30,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:30,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 14:48:30,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:48:30,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6779 [2020-10-27 14:48:30,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:30,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:48:30,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:48:30,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:48:30,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:30,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:30,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:30,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:30,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:30,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:48:30,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:30,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:30,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:48:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:30,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:30,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:30,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:30,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:30,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:30,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:48:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:30,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:30,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:30,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:30,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:30,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 289 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-27 14:48:30,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548851848] [2020-10-27 14:48:30,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:30,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:48:30,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436263295] [2020-10-27 14:48:30,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:48:30,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:30,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:48:30,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:48:30,496 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 21 states. [2020-10-27 14:48:32,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:32,549 INFO L93 Difference]: Finished difference Result 367 states and 372 transitions. [2020-10-27 14:48:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:48:32,550 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 101 [2020-10-27 14:48:32,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:32,553 INFO L225 Difference]: With dead ends: 367 [2020-10-27 14:48:32,553 INFO L226 Difference]: Without dead ends: 304 [2020-10-27 14:48:32,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:48:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-27 14:48:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 108. [2020-10-27 14:48:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:48:32,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2020-10-27 14:48:32,573 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 101 [2020-10-27 14:48:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:32,573 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2020-10-27 14:48:32,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:48:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2020-10-27 14:48:32,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 14:48:32,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:32,574 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:32,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:48:32,575 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:32,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:32,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1262132178, now seen corresponding path program 18 times [2020-10-27 14:48:32,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:32,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525806402] [2020-10-27 14:48:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:34,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:37,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:37,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 14:48:37,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:48:37,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5322 [2020-10-27 14:48:37,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:48:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:48:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:48:37,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:38,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:38,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:38,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:38,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:38,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:48:38,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:38,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:38,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:48:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:38,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:38,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:38,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:38,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:38,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:48:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:38,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:38,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:38,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:38,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:48:38,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 4 proven. 324 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-27 14:48:38,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525806402] [2020-10-27 14:48:38,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:38,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:48:38,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050673672] [2020-10-27 14:48:38,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:48:38,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:38,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:48:38,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:48:38,328 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 22 states. [2020-10-27 14:48:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:40,531 INFO L93 Difference]: Finished difference Result 385 states and 390 transitions. [2020-10-27 14:48:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:48:40,533 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 105 [2020-10-27 14:48:40,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:40,535 INFO L225 Difference]: With dead ends: 385 [2020-10-27 14:48:40,536 INFO L226 Difference]: Without dead ends: 320 [2020-10-27 14:48:40,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:48:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-27 14:48:40,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 112. [2020-10-27 14:48:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:48:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2020-10-27 14:48:40,558 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 105 [2020-10-27 14:48:40,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:40,559 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2020-10-27 14:48:40,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:48:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2020-10-27 14:48:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:48:40,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:40,560 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:40,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:48:40,560 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1826443562, now seen corresponding path program 19 times [2020-10-27 14:48:40,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:40,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008169820] [2020-10-27 14:48:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:40,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:40,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:47,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:47,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 14:48:47,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7158 [2020-10-27 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:48,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:48:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:48,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:48,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:48:48,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:48:48,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:48:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:48:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:48,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:48,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:48,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:48,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:48,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:48,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:48,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:48,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:48:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:48,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:48:48,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:48:48,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:48:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:48:48,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:48:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:48:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:48:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:48:48,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:48:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 4 proven. 361 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2020-10-27 14:48:48,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008169820] [2020-10-27 14:48:48,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:48:48,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:48:48,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076891510] [2020-10-27 14:48:48,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:48:48,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:48:48,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:48:48,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:48:48,241 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 23 states. [2020-10-27 14:48:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:48:50,565 INFO L93 Difference]: Finished difference Result 403 states and 408 transitions. [2020-10-27 14:48:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 14:48:50,566 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 109 [2020-10-27 14:48:50,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:48:50,569 INFO L225 Difference]: With dead ends: 403 [2020-10-27 14:48:50,569 INFO L226 Difference]: Without dead ends: 336 [2020-10-27 14:48:50,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:48:50,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-27 14:48:50,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 116. [2020-10-27 14:48:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:48:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2020-10-27 14:48:50,590 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 109 [2020-10-27 14:48:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:48:50,591 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2020-10-27 14:48:50,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:48:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2020-10-27 14:48:50,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 14:48:50,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:48:50,592 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:48:50,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:48:50,593 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:48:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:48:50,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1728884698, now seen corresponding path program 20 times [2020-10-27 14:48:50,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:48:50,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668465326] [2020-10-27 14:48:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:48:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:48:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:48:53,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:00,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 14:49:00,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:49:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9518 [2020-10-27 14:49:00,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:49:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:49:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:49:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:00,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:00,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:00,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:00,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:00,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:00,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:49:00,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:00,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:00,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:49:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:00,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:00,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:00,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:00,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:00,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:00,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:49:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:00,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:00,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:00,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:00,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:00,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 4 proven. 400 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2020-10-27 14:49:00,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668465326] [2020-10-27 14:49:00,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:00,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:49:00,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55813173] [2020-10-27 14:49:00,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:49:00,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:00,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:49:00,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:49:00,628 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 24 states. [2020-10-27 14:49:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:03,130 INFO L93 Difference]: Finished difference Result 421 states and 426 transitions. [2020-10-27 14:49:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 14:49:03,131 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 113 [2020-10-27 14:49:03,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:03,133 INFO L225 Difference]: With dead ends: 421 [2020-10-27 14:49:03,133 INFO L226 Difference]: Without dead ends: 352 [2020-10-27 14:49:03,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:49:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-27 14:49:03,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 120. [2020-10-27 14:49:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:49:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2020-10-27 14:49:03,160 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 113 [2020-10-27 14:49:03,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:03,160 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2020-10-27 14:49:03,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:49:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2020-10-27 14:49:03,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 14:49:03,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:03,162 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:03,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:49:03,162 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:03,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:03,163 INFO L82 PathProgramCache]: Analyzing trace with hash -567123678, now seen corresponding path program 21 times [2020-10-27 14:49:03,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:03,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112716814] [2020-10-27 14:49:03,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:03,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:08,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:08,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 14:49:08,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:49:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5178 [2020-10-27 14:49:08,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:49:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 14:49:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:49:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:08,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:08,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:08,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:08,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:49:08,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:49:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:08,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:08,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:08,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:08,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:08,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:08,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:08,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:08,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:08,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:08,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:49:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:08,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:08,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:08,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:08,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:08,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:08,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:08,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 4 proven. 441 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2020-10-27 14:49:08,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112716814] [2020-10-27 14:49:08,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:08,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:49:08,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956750676] [2020-10-27 14:49:08,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:49:08,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:08,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:49:08,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:49:08,906 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 25 states. [2020-10-27 14:49:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:11,597 INFO L93 Difference]: Finished difference Result 439 states and 444 transitions. [2020-10-27 14:49:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 14:49:11,597 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 117 [2020-10-27 14:49:11,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:11,601 INFO L225 Difference]: With dead ends: 439 [2020-10-27 14:49:11,601 INFO L226 Difference]: Without dead ends: 368 [2020-10-27 14:49:11,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 14:49:11,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-27 14:49:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 124. [2020-10-27 14:49:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:49:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2020-10-27 14:49:11,623 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 117 [2020-10-27 14:49:11,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:11,623 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2020-10-27 14:49:11,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:49:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2020-10-27 14:49:11,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 14:49:11,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:11,624 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:11,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:49:11,624 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1018854370, now seen corresponding path program 22 times [2020-10-27 14:49:11,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:11,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082786224] [2020-10-27 14:49:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:11,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:17,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:17,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 14:49:17,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:49:17,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5398 [2020-10-27 14:49:17,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:49:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:49:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:49:17,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:17,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:17,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:17,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:17,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:17,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:49:17,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:17,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:49:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:17,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:17,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:17,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:17,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:49:17,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:17,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:49:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:17,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:17,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:17,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:17,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:17,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:17,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 4 proven. 484 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2020-10-27 14:49:17,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082786224] [2020-10-27 14:49:17,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:17,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:49:17,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072591980] [2020-10-27 14:49:17,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:49:17,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:17,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:49:17,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:49:17,614 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 26 states. [2020-10-27 14:49:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:20,587 INFO L93 Difference]: Finished difference Result 457 states and 462 transitions. [2020-10-27 14:49:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 14:49:20,588 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 121 [2020-10-27 14:49:20,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:20,590 INFO L225 Difference]: With dead ends: 457 [2020-10-27 14:49:20,591 INFO L226 Difference]: Without dead ends: 384 [2020-10-27 14:49:20,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:49:20,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-10-27 14:49:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 128. [2020-10-27 14:49:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 14:49:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-10-27 14:49:20,618 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 121 [2020-10-27 14:49:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:20,619 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-10-27 14:49:20,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:49:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-10-27 14:49:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 14:49:20,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:20,620 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:20,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:49:20,621 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:20,621 INFO L82 PathProgramCache]: Analyzing trace with hash 811055386, now seen corresponding path program 23 times [2020-10-27 14:49:20,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:20,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157840599] [2020-10-27 14:49:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:20,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:20,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:52,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:52,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 14:49:52,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:49:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32303 [2020-10-27 14:49:52,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:49:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 14:49:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:49:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:53,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:49:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:53,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:53,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:49:53,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:49:53,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:49:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:53,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:53,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:49:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:53,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:53,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:53,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:53,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:53,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:49:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:53,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:53,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:49:53,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:49:53,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:49:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:49:53,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:49:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:49:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:49:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:49:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:49:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 4 proven. 529 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2020-10-27 14:49:53,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157840599] [2020-10-27 14:49:53,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:49:53,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:49:53,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373717846] [2020-10-27 14:49:53,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:49:53,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:49:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:49:53,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:49:53,560 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 27 states. [2020-10-27 14:49:56,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:49:56,702 INFO L93 Difference]: Finished difference Result 475 states and 480 transitions. [2020-10-27 14:49:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-27 14:49:56,703 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 125 [2020-10-27 14:49:56,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:49:56,706 INFO L225 Difference]: With dead ends: 475 [2020-10-27 14:49:56,706 INFO L226 Difference]: Without dead ends: 400 [2020-10-27 14:49:56,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 14:49:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-27 14:49:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 132. [2020-10-27 14:49:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-27 14:49:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2020-10-27 14:49:56,738 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 125 [2020-10-27 14:49:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:49:56,738 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2020-10-27 14:49:56,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:49:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2020-10-27 14:49:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 14:49:56,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:49:56,740 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:49:56,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:49:56,740 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:49:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:49:56,740 INFO L82 PathProgramCache]: Analyzing trace with hash -283901930, now seen corresponding path program 24 times [2020-10-27 14:49:56,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:49:56,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190629745] [2020-10-27 14:49:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:49:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:49:56,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:49:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:01,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:01,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:50:01,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:50:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-27 14:50:01,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:50:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:50:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:50:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:02,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:50:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:02,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:02,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:02,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:50:02,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:50:02,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:50:02,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:02,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:50:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:02,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:02,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:02,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:02,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:02,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:02,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:02,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:02,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:02,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:50:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:02,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:02,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:02,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:02,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:02,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:02,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:02,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:02,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:02,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:02,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 4 proven. 576 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2020-10-27 14:50:02,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190629745] [2020-10-27 14:50:02,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:50:02,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:50:02,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853774900] [2020-10-27 14:50:02,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:50:02,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:50:02,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:50:02,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:50:02,498 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand 28 states. [2020-10-27 14:50:05,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:50:05,864 INFO L93 Difference]: Finished difference Result 493 states and 498 transitions. [2020-10-27 14:50:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 14:50:05,865 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 129 [2020-10-27 14:50:05,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:50:05,868 INFO L225 Difference]: With dead ends: 493 [2020-10-27 14:50:05,868 INFO L226 Difference]: Without dead ends: 416 [2020-10-27 14:50:05,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 14:50:05,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-27 14:50:05,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 136. [2020-10-27 14:50:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 14:50:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2020-10-27 14:50:05,893 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 129 [2020-10-27 14:50:05,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:50:05,893 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2020-10-27 14:50:05,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:50:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2020-10-27 14:50:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 14:50:05,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:50:05,895 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:50:05,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:50:05,895 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:50:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:50:05,895 INFO L82 PathProgramCache]: Analyzing trace with hash 715479314, now seen corresponding path program 25 times [2020-10-27 14:50:05,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:50:05,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932285444] [2020-10-27 14:50:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:50:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:10,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:10,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 14:50:10,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:50:10,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:50:10,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:50:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:50:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:50:10,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:11,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:50:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:11,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:50:11,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:50:11,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:11,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:11,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:50:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:11,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:11,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:11,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:11,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:11,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:11,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:11,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:11,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:50:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:50:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:50:11,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:50:11,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:50:11,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:50:11,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:50:11,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:50:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:50:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:50:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:50:11,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:50:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 4 proven. 625 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2020-10-27 14:50:11,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932285444] [2020-10-27 14:50:11,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:50:11,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:50:11,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738587001] [2020-10-27 14:50:11,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:50:11,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:50:11,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:50:11,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:50:11,621 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 29 states.