/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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-examples/sorting_selectionsort_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:30:41,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:30:41,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:30:41,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:30:41,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:30:41,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:30:41,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:30:41,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:30:41,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:30:41,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:30:41,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:30:41,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:30:41,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:30:41,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:30:41,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:30:41,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:30:41,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:30:41,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:30:41,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:30:41,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:30:41,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:30:41,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:30:41,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:30:41,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:30:41,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:30:41,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:30:41,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:30:41,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:30:41,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:30:41,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:30:41,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:30:41,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:30:41,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:30:41,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:30:41,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:30:41,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:30:41,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:30:41,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:30:41,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:30:41,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:30:41,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:30:41,948 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 [2020-10-29 03:30:42,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:30:42,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:30:42,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:30:42,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:30:42,016 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:30:42,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:30:42,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:30:42,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:30:42,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:30:42,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:30:42,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:30:42,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:30:42,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:30:42,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:30:42,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:30:42,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:30:42,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:30:42,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:30:42,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:30:42,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:30:42,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:30:42,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:30:42,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:30:42,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:30:42,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:30:42,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:30:42,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:30:42,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:30:42,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:30:42,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:30:42,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:30:42,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:30:42,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:30:42,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:30:42,535 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:30:42,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-2.i [2020-10-29 03:30:42,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc0adf379/55f73b1ad5cd4fb8b878b13e1c2f965e/FLAG074224d88 [2020-10-29 03:30:43,284 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:30:43,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-2.i [2020-10-29 03:30:43,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc0adf379/55f73b1ad5cd4fb8b878b13e1c2f965e/FLAG074224d88 [2020-10-29 03:30:43,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc0adf379/55f73b1ad5cd4fb8b878b13e1c2f965e [2020-10-29 03:30:43,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:30:43,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:30:43,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:30:43,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:30:43,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:30:43,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:43" (1/1) ... [2020-10-29 03:30:43,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f66cf56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:43, skipping insertion in model container [2020-10-29 03:30:43,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:43" (1/1) ... [2020-10-29 03:30:43,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:30:43,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:30:44,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:30:44,059 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:30:44,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:30:44,147 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:30:44,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:44 WrapperNode [2020-10-29 03:30:44,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:30:44,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:30:44,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:30:44,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:30:44,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:44" (1/1) ... [2020-10-29 03:30:44,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:44" (1/1) ... [2020-10-29 03:30:44,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:44" (1/1) ... [2020-10-29 03:30:44,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:44" (1/1) ... [2020-10-29 03:30:44,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:44" (1/1) ... [2020-10-29 03:30:44,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:44" (1/1) ... [2020-10-29 03:30:44,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:44" (1/1) ... [2020-10-29 03:30:44,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:30:44,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:30:44,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:30:44,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:30:44,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:44" (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 [2020-10-29 03:30:44,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:30:44,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:30:44,352 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:30:44,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:30:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:30:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:30:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:30:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:30:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:30:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:30:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:30:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:30:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:30:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:30:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:30:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:30:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:30:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:30:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:30:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:30:44,800 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:30:44,801 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-29 03:30:44,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:44 BoogieIcfgContainer [2020-10-29 03:30:44,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:30:44,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:30:44,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:30:44,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:30:44,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:30:43" (1/3) ... [2020-10-29 03:30:44,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afc23c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:30:44, skipping insertion in model container [2020-10-29 03:30:44,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:44" (2/3) ... [2020-10-29 03:30:44,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afc23c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:30:44, skipping insertion in model container [2020-10-29 03:30:44,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:44" (3/3) ... [2020-10-29 03:30:44,813 INFO L111 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_ground-2.i [2020-10-29 03:30:44,826 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:30:44,834 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:30:44,854 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:30:44,891 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:30:44,891 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:30:44,891 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:30:44,891 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:30:44,891 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:30:44,892 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:30:44,892 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:30:44,892 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:30:44,912 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-29 03:30:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:30:44,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:44,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:44,921 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:44,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:44,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1006986874, now seen corresponding path program 1 times [2020-10-29 03:30:44,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:44,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169540432] [2020-10-29 03:30:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:45,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:30:45,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 03:30:45,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:45,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:30:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:45,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:30:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:45,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:45,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:45,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:45,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:30:45,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:45,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:45,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:45,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169540432] [2020-10-29 03:30:45,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:45,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:30:45,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466441008] [2020-10-29 03:30:45,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:30:45,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:45,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:30:45,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:30:45,458 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-10-29 03:30:45,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:45,636 INFO L93 Difference]: Finished difference Result 89 states and 133 transitions. [2020-10-29 03:30:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:30:45,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-29 03:30:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:45,650 INFO L225 Difference]: With dead ends: 89 [2020-10-29 03:30:45,650 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:30:45,655 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 [2020-10-29 03:30:45,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:30:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 03:30:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:30:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2020-10-29 03:30:45,710 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 18 [2020-10-29 03:30:45,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:45,711 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2020-10-29 03:30:45,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:30:45,711 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2020-10-29 03:30:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:30:45,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:45,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:45,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:30:45,715 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:45,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:45,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1889588042, now seen corresponding path program 1 times [2020-10-29 03:30:45,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:45,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078927713] [2020-10-29 03:30:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:45,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:46,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:30:46,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:46,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-29 03:30:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:46,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:30:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:46,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:46,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 03:30:46,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:46,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:46,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:46,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078927713] [2020-10-29 03:30:46,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:46,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:30:46,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790964476] [2020-10-29 03:30:46,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:30:46,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:46,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:30:46,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:46,205 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 4 states. [2020-10-29 03:30:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:46,468 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2020-10-29 03:30:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:30:46,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-29 03:30:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:46,471 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:30:46,471 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:30:46,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:30:46,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 03:30:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:30:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2020-10-29 03:30:46,488 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 18 [2020-10-29 03:30:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:46,488 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2020-10-29 03:30:46,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:30:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2020-10-29 03:30:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:30:46,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:46,490 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] [2020-10-29 03:30:46,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:30:46,490 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:46,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:46,491 INFO L82 PathProgramCache]: Analyzing trace with hash -888776724, now seen corresponding path program 1 times [2020-10-29 03:30:46,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:46,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870638780] [2020-10-29 03:30:46,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:46,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:46,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:30:46,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:46,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-29 03:30:46,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:46,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:30:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:30:46,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:46,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:46,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:46,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:46,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:46,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:30:46,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:46,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:46,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870638780] [2020-10-29 03:30:46,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:46,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:30:46,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796656044] [2020-10-29 03:30:46,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:30:46,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:46,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:30:46,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:30:46,902 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 5 states. [2020-10-29 03:30:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:47,066 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2020-10-29 03:30:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:30:47,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-29 03:30:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:47,069 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:30:47,069 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:30:47,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:30:47,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:30:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 03:30:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:30:47,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-29 03:30:47,080 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 20 [2020-10-29 03:30:47,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:47,081 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-29 03:30:47,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:30:47,081 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-29 03:30:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:30:47,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:47,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:47,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:30:47,083 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:47,084 INFO L82 PathProgramCache]: Analyzing trace with hash 572341262, now seen corresponding path program 2 times [2020-10-29 03:30:47,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:47,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863038242] [2020-10-29 03:30:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:30:47,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:47,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 03:30:47,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:30:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:30:47,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:47,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:47,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:47,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:47,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:47,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:47,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863038242] [2020-10-29 03:30:47,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:47,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:30:47,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380255784] [2020-10-29 03:30:47,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:30:47,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:47,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:30:47,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:30:47,390 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 6 states. [2020-10-29 03:30:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:47,542 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2020-10-29 03:30:47,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:30:47,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-29 03:30:47,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:47,544 INFO L225 Difference]: With dead ends: 82 [2020-10-29 03:30:47,544 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:30:47,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:30:47,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:30:47,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 03:30:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:30:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2020-10-29 03:30:47,553 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 22 [2020-10-29 03:30:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:47,554 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2020-10-29 03:30:47,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:30:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2020-10-29 03:30:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:30:47,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:47,555 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:47,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:30:47,556 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:47,556 INFO L82 PathProgramCache]: Analyzing trace with hash 252420016, now seen corresponding path program 3 times [2020-10-29 03:30:47,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:47,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830557821] [2020-10-29 03:30:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:30:47,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:47,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 03:30:47,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:30:47,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:47,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:30:47,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:47,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:47,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:47,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:30:47,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:47,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830557821] [2020-10-29 03:30:47,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:47,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:30:47,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661821613] [2020-10-29 03:30:47,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:30:47,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:47,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:30:47,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:30:47,877 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 7 states. [2020-10-29 03:30:48,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:48,068 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2020-10-29 03:30:48,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:30:48,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-29 03:30:48,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:48,070 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:30:48,070 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:30:48,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:30:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:30:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 03:30:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:30:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2020-10-29 03:30:48,079 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 24 [2020-10-29 03:30:48,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:48,080 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2020-10-29 03:30:48,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:30:48,080 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2020-10-29 03:30:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:30:48,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:48,081 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:48,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:30:48,082 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:48,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:48,082 INFO L82 PathProgramCache]: Analyzing trace with hash 2045747922, now seen corresponding path program 4 times [2020-10-29 03:30:48,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:48,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865187092] [2020-10-29 03:30:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:48,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:30:48,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:48,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-29 03:30:48,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:30:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:30:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:48,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:48,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:48,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:48,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:48,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865187092] [2020-10-29 03:30:48,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:48,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:30:48,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391328157] [2020-10-29 03:30:48,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:30:48,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:48,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:30:48,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:30:48,562 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 8 states. [2020-10-29 03:30:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:48,714 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2020-10-29 03:30:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:30:48,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-29 03:30:48,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:48,716 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:30:48,716 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:30:48,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:30:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:30:48,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 03:30:48,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:30:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-29 03:30:48,725 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 26 [2020-10-29 03:30:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:48,725 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-29 03:30:48,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:30:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-29 03:30:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:30:48,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:48,727 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:48,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:30:48,727 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:48,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:48,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1142987404, now seen corresponding path program 5 times [2020-10-29 03:30:48,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:48,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629215523] [2020-10-29 03:30:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:49,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:30:49,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:49,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-29 03:30:49,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:49,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:30:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:30:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:49,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:49,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:49,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:49,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:49,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:49,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629215523] [2020-10-29 03:30:49,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:49,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:30:49,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794566065] [2020-10-29 03:30:49,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:30:49,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:49,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:30:49,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:30:49,242 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 9 states. [2020-10-29 03:30:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:49,395 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2020-10-29 03:30:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:30:49,395 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-29 03:30:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:49,397 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:30:49,397 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:30:49,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:30:49,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:30:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 03:30:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:30:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-29 03:30:49,406 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 28 [2020-10-29 03:30:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:49,406 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-29 03:30:49,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:30:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-29 03:30:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:30:49,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:49,408 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:49,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:30:49,409 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:49,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:49,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1089013654, now seen corresponding path program 6 times [2020-10-29 03:30:49,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:49,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314120529] [2020-10-29 03:30:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:49,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:30:49,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:49,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-29 03:30:49,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:49,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:30:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:30:49,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:49,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:49,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:49,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:49,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:49,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314120529] [2020-10-29 03:30:49,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:49,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:30:49,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254859941] [2020-10-29 03:30:49,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:30:49,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:49,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:30:49,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:30:49,907 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 10 states. [2020-10-29 03:30:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:50,046 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2020-10-29 03:30:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:30:50,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-29 03:30:50,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:50,048 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:30:50,048 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:30:50,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:30:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:30:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 03:30:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:30:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-10-29 03:30:50,055 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 30 [2020-10-29 03:30:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:50,056 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-10-29 03:30:50,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:30:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-10-29 03:30:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:30:50,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:50,057 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:50,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:30:50,057 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:50,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1441617608, now seen corresponding path program 7 times [2020-10-29 03:30:50,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:50,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201354866] [2020-10-29 03:30:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:50,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:30:50,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-29 03:30:50,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:50,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:30:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:30:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:50,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:50,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:50,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:50,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:50,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:50,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:50,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201354866] [2020-10-29 03:30:50,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:50,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:30:50,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705577870] [2020-10-29 03:30:50,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:30:50,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:50,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:30:50,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:30:50,773 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 11 states. [2020-10-29 03:30:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:50,947 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2020-10-29 03:30:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:30:50,947 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-29 03:30:50,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:50,949 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:30:50,949 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:30:50,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:30:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:30:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 03:30:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:30:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-29 03:30:50,957 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 32 [2020-10-29 03:30:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:50,957 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-29 03:30:50,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:30:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-29 03:30:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:30:50,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:50,959 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:50,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:30:50,960 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:50,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1868196442, now seen corresponding path program 8 times [2020-10-29 03:30:50,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:50,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88201793] [2020-10-29 03:30:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:51,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:30:51,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:51,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-29 03:30:51,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:51,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:30:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:30:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:51,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:51,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:51,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:51,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:51,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:51,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88201793] [2020-10-29 03:30:51,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:51,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:30:51,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405240772] [2020-10-29 03:30:51,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:30:51,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:51,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:30:51,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:30:51,671 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 12 states. [2020-10-29 03:30:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:51,841 INFO L93 Difference]: Finished difference Result 94 states and 116 transitions. [2020-10-29 03:30:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:30:51,841 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-29 03:30:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:51,842 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:30:51,842 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:30:51,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:30:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:30:51,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 03:30:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:30:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-29 03:30:51,849 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 34 [2020-10-29 03:30:51,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:51,849 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-29 03:30:51,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:30:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-29 03:30:51,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:30:51,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:51,850 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:51,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:30:51,851 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:51,851 INFO L82 PathProgramCache]: Analyzing trace with hash 28732156, now seen corresponding path program 9 times [2020-10-29 03:30:51,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:51,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48550841] [2020-10-29 03:30:51,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:52,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:52,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:30:52,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:52,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-10-29 03:30:52,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:52,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:30:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:30:52,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:52,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:52,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:52,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:52,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:52,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:52,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:52,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:52,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48550841] [2020-10-29 03:30:52,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:52,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:30:52,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113154219] [2020-10-29 03:30:52,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:30:52,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:52,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:30:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:30:52,846 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 13 states. [2020-10-29 03:30:52,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:52,990 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2020-10-29 03:30:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:30:52,991 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-29 03:30:52,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:52,992 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:30:52,992 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:30:52,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:30:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:30:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 03:30:53,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:30:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-10-29 03:30:53,006 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 36 [2020-10-29 03:30:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:53,007 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-10-29 03:30:53,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:30:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-10-29 03:30:53,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:30:53,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:53,008 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:53,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:30:53,008 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:53,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:53,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1830079262, now seen corresponding path program 10 times [2020-10-29 03:30:53,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:53,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179729445] [2020-10-29 03:30:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:53,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:30:53,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:53,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-29 03:30:53,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:53,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:30:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:30:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:54,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:54,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:54,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:54,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:54,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:54,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:54,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179729445] [2020-10-29 03:30:54,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:54,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:30:54,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52178241] [2020-10-29 03:30:54,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:30:54,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:54,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:30:54,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:30:54,055 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 14 states. [2020-10-29 03:30:54,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:54,234 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2020-10-29 03:30:54,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:30:54,235 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-29 03:30:54,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:54,236 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:30:54,236 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:30:54,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:30:54,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:30:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 03:30:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:30:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-10-29 03:30:54,247 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 38 [2020-10-29 03:30:54,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:54,248 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-10-29 03:30:54,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:30:54,248 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-10-29 03:30:54,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:30:54,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:54,251 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:54,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:30:54,252 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:54,252 INFO L82 PathProgramCache]: Analyzing trace with hash 2052827840, now seen corresponding path program 11 times [2020-10-29 03:30:54,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:54,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163120577] [2020-10-29 03:30:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:55,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:55,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:30:55,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-10-29 03:30:55,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:55,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:30:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:30:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:55,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:55,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:55,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:55,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:55,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:55,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:55,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:55,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163120577] [2020-10-29 03:30:55,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:55,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:30:55,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583561825] [2020-10-29 03:30:55,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:30:55,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:55,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:30:55,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:30:55,484 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 15 states. [2020-10-29 03:30:55,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:55,649 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2020-10-29 03:30:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:30:55,650 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-10-29 03:30:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:55,651 INFO L225 Difference]: With dead ends: 100 [2020-10-29 03:30:55,651 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:30:55,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:30:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:30:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 03:30:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:30:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2020-10-29 03:30:55,657 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 40 [2020-10-29 03:30:55,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:55,657 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2020-10-29 03:30:55,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:30:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2020-10-29 03:30:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:30:55,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:55,658 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:55,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:30:55,659 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:55,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:55,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1365846498, now seen corresponding path program 12 times [2020-10-29 03:30:55,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:55,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385578765] [2020-10-29 03:30:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:55,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:55,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:56,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:56,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:30:56,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-10-29 03:30:56,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:56,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:56,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:30:56,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:56,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:30:56,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:56,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:56,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:56,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:56,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:56,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:56,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:56,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:56,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385578765] [2020-10-29 03:30:56,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:56,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:30:56,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309831909] [2020-10-29 03:30:56,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:30:56,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:56,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:30:56,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:30:56,925 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 16 states. [2020-10-29 03:30:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:57,105 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2020-10-29 03:30:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:30:57,106 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-29 03:30:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:57,107 INFO L225 Difference]: With dead ends: 102 [2020-10-29 03:30:57,107 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:30:57,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:30:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:30:57,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 03:30:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:30:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2020-10-29 03:30:57,113 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 42 [2020-10-29 03:30:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:57,113 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2020-10-29 03:30:57,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:30:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2020-10-29 03:30:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:30:57,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:57,114 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:57,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:30:57,114 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:57,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1693226876, now seen corresponding path program 13 times [2020-10-29 03:30:57,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:57,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137569391] [2020-10-29 03:30:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:58,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:58,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:30:58,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:30:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:58,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:58,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:58,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:58,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:58,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:58,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:58,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:58,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:58,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137569391] [2020-10-29 03:30:58,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:58,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:30:58,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630490074] [2020-10-29 03:30:58,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:30:58,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:58,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:30:58,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:30:58,546 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 17 states. [2020-10-29 03:30:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:58,726 INFO L93 Difference]: Finished difference Result 104 states and 126 transitions. [2020-10-29 03:30:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:30:58,726 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-29 03:30:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:58,727 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:30:58,727 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:30:58,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:30:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:30:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 03:30:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:30:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2020-10-29 03:30:58,733 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 44 [2020-10-29 03:30:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:58,733 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2020-10-29 03:30:58,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:30:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2020-10-29 03:30:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:30:58,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:58,734 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:58,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:30:58,735 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:58,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:58,735 INFO L82 PathProgramCache]: Analyzing trace with hash 589858470, now seen corresponding path program 14 times [2020-10-29 03:30:58,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:58,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062895827] [2020-10-29 03:30:58,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:00,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:31:00,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:00,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1447 [2020-10-29 03:31:00,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:00,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:31:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:31:00,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:00,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:00,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:00,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:00,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:00,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:00,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:00,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:00,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062895827] [2020-10-29 03:31:00,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:00,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:31:00,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428388508] [2020-10-29 03:31:00,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:31:00,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:00,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:31:00,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:31:00,415 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand 18 states. [2020-10-29 03:31:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:00,589 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2020-10-29 03:31:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:31:00,590 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2020-10-29 03:31:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:00,591 INFO L225 Difference]: With dead ends: 106 [2020-10-29 03:31:00,591 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:31:00,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:31:00,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:31:00,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 03:31:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:31:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-10-29 03:31:00,597 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 46 [2020-10-29 03:31:00,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:00,597 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-10-29 03:31:00,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:31:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-10-29 03:31:00,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:31:00,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:00,598 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:00,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:31:00,598 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:00,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:00,599 INFO L82 PathProgramCache]: Analyzing trace with hash -93412280, now seen corresponding path program 15 times [2020-10-29 03:31:00,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:00,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523510476] [2020-10-29 03:31:00,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:02,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:02,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:31:02,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1528 [2020-10-29 03:31:02,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:02,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:31:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:02,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:31:02,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:02,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:02,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:02,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:02,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:02,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:02,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:02,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:02,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:02,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523510476] [2020-10-29 03:31:02,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:02,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:31:02,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344969280] [2020-10-29 03:31:02,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:31:02,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:02,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:31:02,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:31:02,383 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 19 states. [2020-10-29 03:31:02,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:02,593 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2020-10-29 03:31:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:31:02,593 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-29 03:31:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:02,594 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:31:02,595 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:31:02,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:31:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:31:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 03:31:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:31:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-10-29 03:31:02,601 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 48 [2020-10-29 03:31:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:02,601 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-10-29 03:31:02,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:31:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-10-29 03:31:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:31:02,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:02,602 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:02,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:31:02,602 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:02,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:02,603 INFO L82 PathProgramCache]: Analyzing trace with hash 413393258, now seen corresponding path program 16 times [2020-10-29 03:31:02,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:02,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023488172] [2020-10-29 03:31:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:02,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:04,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:04,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:31:04,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:04,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1569 [2020-10-29 03:31:04,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:04,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:04,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:31:04,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:04,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:31:04,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:04,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:04,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:04,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:04,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:04,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:04,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:04,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:04,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:04,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023488172] [2020-10-29 03:31:04,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:04,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:31:04,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363677690] [2020-10-29 03:31:04,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:31:04,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:04,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:31:04,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:31:04,455 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 20 states. [2020-10-29 03:31:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:04,736 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2020-10-29 03:31:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:31:04,736 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2020-10-29 03:31:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:04,737 INFO L225 Difference]: With dead ends: 110 [2020-10-29 03:31:04,737 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:31:04,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:31:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:31:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 03:31:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:31:04,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-10-29 03:31:04,743 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 50 [2020-10-29 03:31:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:04,744 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-10-29 03:31:04,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:31:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-10-29 03:31:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:31:04,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:04,745 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:04,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:31:04,745 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:04,746 INFO L82 PathProgramCache]: Analyzing trace with hash 2122210828, now seen corresponding path program 17 times [2020-10-29 03:31:04,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:04,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156857923] [2020-10-29 03:31:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:04,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:06,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:06,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:31:06,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1534 [2020-10-29 03:31:06,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:06,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:31:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:31:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:06,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:06,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:06,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:06,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:06,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:06,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:06,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:06,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:06,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:06,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156857923] [2020-10-29 03:31:06,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:06,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:31:06,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267636626] [2020-10-29 03:31:06,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:31:06,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:06,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:31:06,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:31:06,558 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 21 states. [2020-10-29 03:31:06,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:06,693 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2020-10-29 03:31:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:31:06,693 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2020-10-29 03:31:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:06,694 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:31:06,694 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:31:06,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:31:06,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:31:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 03:31:06,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:31:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2020-10-29 03:31:06,702 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 52 [2020-10-29 03:31:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:06,702 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2020-10-29 03:31:06,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:31:06,703 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2020-10-29 03:31:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:31:06,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:06,705 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:06,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:31:06,705 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:06,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:06,706 INFO L82 PathProgramCache]: Analyzing trace with hash -676578770, now seen corresponding path program 18 times [2020-10-29 03:31:06,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:06,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763889549] [2020-10-29 03:31:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:08,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:31:08,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1585 [2020-10-29 03:31:08,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:08,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:31:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:31:08,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:08,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:08,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:08,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:08,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:08,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:31:08,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:08,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:08,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763889549] [2020-10-29 03:31:08,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:08,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:31:08,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883004666] [2020-10-29 03:31:08,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:31:08,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:08,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:31:08,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:31:08,614 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand 22 states. [2020-10-29 03:31:08,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:08,809 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2020-10-29 03:31:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:31:08,809 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-29 03:31:08,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:08,810 INFO L225 Difference]: With dead ends: 114 [2020-10-29 03:31:08,810 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:31:08,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:31:08,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:31:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 03:31:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:31:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2020-10-29 03:31:08,816 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 54 [2020-10-29 03:31:08,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:08,817 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2020-10-29 03:31:08,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:31:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2020-10-29 03:31:08,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:31:08,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:08,818 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:08,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:31:08,818 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:08,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1663855152, now seen corresponding path program 19 times [2020-10-29 03:31:08,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:08,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272171208] [2020-10-29 03:31:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:08,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:10,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:10,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:31:10,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:10,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-10-29 03:31:10,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:10,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:10,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:31:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:31:10,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:10,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:11,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:11,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:11,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:11,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:31:11,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:11,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:11,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:31:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:11,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272171208] [2020-10-29 03:31:11,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:11,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:31:11,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780832806] [2020-10-29 03:31:11,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:31:11,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:11,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:31:11,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:31:11,028 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 23 states. [2020-10-29 03:31:11,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:11,333 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2020-10-29 03:31:11,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:31:11,334 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2020-10-29 03:31:11,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:11,335 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:31:11,335 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:31:11,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:31:11,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:31:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 03:31:11,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:31:11,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-10-29 03:31:11,343 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 56 [2020-10-29 03:31:11,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:11,343 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-10-29 03:31:11,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:31:11,343 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-10-29 03:31:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:31:11,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:11,351 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:11,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:31:11,351 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:11,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:11,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1248685838, now seen corresponding path program 20 times [2020-10-29 03:31:11,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:11,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887864258] [2020-10-29 03:31:11,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:13,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:31:13,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1975 [2020-10-29 03:31:13,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:13,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:31:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:31:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:13,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:13,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:13,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:13,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:13,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:13,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:31:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:13,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887864258] [2020-10-29 03:31:13,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:13,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:31:13,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943293997] [2020-10-29 03:31:13,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:31:13,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:13,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:31:13,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:31:13,667 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 24 states. [2020-10-29 03:31:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:13,879 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2020-10-29 03:31:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:31:13,882 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2020-10-29 03:31:13,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:13,883 INFO L225 Difference]: With dead ends: 118 [2020-10-29 03:31:13,883 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:31:13,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:31:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:31:13,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-29 03:31:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:31:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-10-29 03:31:13,893 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 58 [2020-10-29 03:31:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:13,893 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-10-29 03:31:13,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:31:13,893 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-10-29 03:31:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 03:31:13,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:13,894 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:13,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:31:13,895 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:13,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1702933612, now seen corresponding path program 21 times [2020-10-29 03:31:13,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:13,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755555] [2020-10-29 03:31:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:16,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:31:16,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2191 [2020-10-29 03:31:16,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:16,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:31:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:31:16,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:16,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:16,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:16,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:16,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:16,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:16,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:16,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:16,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755555] [2020-10-29 03:31:16,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:16,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:31:16,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932845789] [2020-10-29 03:31:16,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:31:16,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:16,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:31:16,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:31:16,491 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 25 states. [2020-10-29 03:31:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:16,753 INFO L93 Difference]: Finished difference Result 120 states and 142 transitions. [2020-10-29 03:31:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:31:16,753 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-10-29 03:31:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:16,754 INFO L225 Difference]: With dead ends: 120 [2020-10-29 03:31:16,755 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:31:16,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:31:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:31:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 03:31:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:31:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-10-29 03:31:16,761 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 60 [2020-10-29 03:31:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:16,761 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-10-29 03:31:16,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:31:16,762 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-10-29 03:31:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:31:16,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:16,763 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:16,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:31:16,763 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:16,764 INFO L82 PathProgramCache]: Analyzing trace with hash -148380234, now seen corresponding path program 22 times [2020-10-29 03:31:16,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:16,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262268384] [2020-10-29 03:31:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:16,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:18,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:31:18,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1817 [2020-10-29 03:31:18,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:18,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:31:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:18,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:31:18,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:18,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:18,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:18,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:18,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:18,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:18,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:31:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:18,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262268384] [2020-10-29 03:31:18,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:18,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:31:18,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208647421] [2020-10-29 03:31:18,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:31:18,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:18,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:31:18,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:31:18,995 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 26 states. [2020-10-29 03:31:19,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:19,245 INFO L93 Difference]: Finished difference Result 122 states and 144 transitions. [2020-10-29 03:31:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:31:19,245 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2020-10-29 03:31:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:19,247 INFO L225 Difference]: With dead ends: 122 [2020-10-29 03:31:19,247 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:31:19,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:31:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:31:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-29 03:31:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:31:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2020-10-29 03:31:19,252 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 62 [2020-10-29 03:31:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:19,253 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2020-10-29 03:31:19,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:31:19,253 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2020-10-29 03:31:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:31:19,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:19,254 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:19,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:31:19,256 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:19,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:19,256 INFO L82 PathProgramCache]: Analyzing trace with hash -871202984, now seen corresponding path program 23 times [2020-10-29 03:31:19,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:19,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367780027] [2020-10-29 03:31:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:19,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:19,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:21,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:21,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:31:21,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1804 [2020-10-29 03:31:21,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:21,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:31:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:31:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:21,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:21,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:21,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:21,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:21,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:21,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:21,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:21,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:21,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:21,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367780027] [2020-10-29 03:31:21,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:21,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:31:21,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960509097] [2020-10-29 03:31:21,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:31:21,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:21,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:31:21,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:31:21,526 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand 27 states. [2020-10-29 03:31:21,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:21,744 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2020-10-29 03:31:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:31:21,745 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2020-10-29 03:31:21,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:21,746 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:31:21,746 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:31:21,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:31:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:31:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-29 03:31:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:31:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-10-29 03:31:21,752 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 64 [2020-10-29 03:31:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:21,753 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-10-29 03:31:21,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:31:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-10-29 03:31:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:31:21,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:21,754 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:21,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:31:21,754 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:21,754 INFO L82 PathProgramCache]: Analyzing trace with hash 280836218, now seen corresponding path program 24 times [2020-10-29 03:31:21,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:21,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078595014] [2020-10-29 03:31:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:21,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:23,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:23,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 03:31:23,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:23,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1910 [2020-10-29 03:31:23,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:23,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:31:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:31:23,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:24,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:24,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:24,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:24,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:24,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:24,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:24,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:24,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:24,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:24,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078595014] [2020-10-29 03:31:24,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:24,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:31:24,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710320028] [2020-10-29 03:31:24,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:31:24,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:24,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:31:24,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:31:24,120 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 28 states. [2020-10-29 03:31:24,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:24,409 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2020-10-29 03:31:24,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:31:24,410 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2020-10-29 03:31:24,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:24,411 INFO L225 Difference]: With dead ends: 126 [2020-10-29 03:31:24,411 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:31:24,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:31:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:31:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-29 03:31:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:31:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2020-10-29 03:31:24,423 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 66 [2020-10-29 03:31:24,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:24,423 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2020-10-29 03:31:24,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:31:24,423 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2020-10-29 03:31:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:31:24,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:24,428 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:24,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:31:24,429 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:24,431 INFO L82 PathProgramCache]: Analyzing trace with hash -711053028, now seen corresponding path program 25 times [2020-10-29 03:31:24,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:24,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119733005] [2020-10-29 03:31:24,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:26,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:26,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:31:26,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2188 [2020-10-29 03:31:26,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:26,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:31:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:31:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:27,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:27,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:27,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:27,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:27,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:27,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:27,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119733005] [2020-10-29 03:31:27,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:27,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:31:27,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627131342] [2020-10-29 03:31:27,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:31:27,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:27,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:31:27,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:31:27,121 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand 29 states. [2020-10-29 03:31:27,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:27,401 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2020-10-29 03:31:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:31:27,402 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2020-10-29 03:31:27,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:27,403 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:31:27,403 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:31:27,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:31:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:31:27,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-29 03:31:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:31:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2020-10-29 03:31:27,410 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 68 [2020-10-29 03:31:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:27,410 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2020-10-29 03:31:27,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:31:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2020-10-29 03:31:27,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:31:27,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:27,411 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:27,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:31:27,412 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:27,412 INFO L82 PathProgramCache]: Analyzing trace with hash -433878722, now seen corresponding path program 26 times [2020-10-29 03:31:27,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:27,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186101265] [2020-10-29 03:31:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:27,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:27,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:29,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:29,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:31:29,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2128 [2020-10-29 03:31:29,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:29,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:29,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:31:29,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:29,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:31:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:30,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:30,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:30,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:30,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:30,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:30,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:30,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:30,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:30,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:30,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:30,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:30,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186101265] [2020-10-29 03:31:30,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:30,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:31:30,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386396067] [2020-10-29 03:31:30,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:31:30,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:30,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:31:30,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:31:30,115 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 30 states. [2020-10-29 03:31:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:30,441 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-10-29 03:31:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:31:30,442 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2020-10-29 03:31:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:30,443 INFO L225 Difference]: With dead ends: 130 [2020-10-29 03:31:30,443 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 03:31:30,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:31:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 03:31:30,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-29 03:31:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:31:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2020-10-29 03:31:30,460 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 70 [2020-10-29 03:31:30,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:30,460 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2020-10-29 03:31:30,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:31:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2020-10-29 03:31:30,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:31:30,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:30,461 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:30,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:31:30,461 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:30,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:30,462 INFO L82 PathProgramCache]: Analyzing trace with hash -357343008, now seen corresponding path program 27 times [2020-10-29 03:31:30,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:30,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299138177] [2020-10-29 03:31:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:30,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:32,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:32,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:31:32,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2382 [2020-10-29 03:31:32,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:32,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:31:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:31:32,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:33,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:33,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:33,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:33,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:33,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299138177] [2020-10-29 03:31:33,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:33,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:31:33,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049137229] [2020-10-29 03:31:33,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:31:33,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:33,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:31:33,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:31:33,386 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 31 states. [2020-10-29 03:31:33,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:33,614 INFO L93 Difference]: Finished difference Result 132 states and 154 transitions. [2020-10-29 03:31:33,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:31:33,615 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2020-10-29 03:31:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:33,616 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:31:33,616 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:31:33,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:31:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:31:33,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-29 03:31:33,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 03:31:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2020-10-29 03:31:33,623 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 72 [2020-10-29 03:31:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:33,623 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2020-10-29 03:31:33,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:31:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2020-10-29 03:31:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 03:31:33,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:33,625 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:33,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:31:33,625 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:33,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:33,626 INFO L82 PathProgramCache]: Analyzing trace with hash 179034114, now seen corresponding path program 28 times [2020-10-29 03:31:33,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:33,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282448964] [2020-10-29 03:31:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:33,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:33,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:36,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:36,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:31:36,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2679 [2020-10-29 03:31:36,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:36,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:31:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:31:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:36,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:36,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:36,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:36,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:36,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:36,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:36,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282448964] [2020-10-29 03:31:36,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:36,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:31:36,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328099818] [2020-10-29 03:31:36,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:31:36,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:36,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:31:36,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:31:36,916 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 32 states. [2020-10-29 03:31:37,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:37,230 INFO L93 Difference]: Finished difference Result 134 states and 156 transitions. [2020-10-29 03:31:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:31:37,231 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2020-10-29 03:31:37,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:37,232 INFO L225 Difference]: With dead ends: 134 [2020-10-29 03:31:37,233 INFO L226 Difference]: Without dead ends: 100 [2020-10-29 03:31:37,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:31:37,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-29 03:31:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-29 03:31:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 03:31:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2020-10-29 03:31:37,241 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 74 [2020-10-29 03:31:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:37,241 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2020-10-29 03:31:37,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:31:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2020-10-29 03:31:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:31:37,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:37,242 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:37,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:31:37,242 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:37,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:37,243 INFO L82 PathProgramCache]: Analyzing trace with hash 241372836, now seen corresponding path program 29 times [2020-10-29 03:31:37,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:37,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035952203] [2020-10-29 03:31:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:39,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:39,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:31:39,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2706 [2020-10-29 03:31:39,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:39,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:31:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:31:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:40,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:40,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:40,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:40,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:40,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:40,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035952203] [2020-10-29 03:31:40,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:40,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:31:40,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304191063] [2020-10-29 03:31:40,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:31:40,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:40,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:31:40,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:31:40,565 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand 33 states. [2020-10-29 03:31:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:40,861 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2020-10-29 03:31:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:31:40,861 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2020-10-29 03:31:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:40,863 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:31:40,863 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:31:40,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:31:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:31:40,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-29 03:31:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:31:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-10-29 03:31:40,870 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 76 [2020-10-29 03:31:40,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:40,871 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-10-29 03:31:40,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:31:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-10-29 03:31:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:31:40,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:40,872 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:40,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:31:40,874 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:40,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:40,875 INFO L82 PathProgramCache]: Analyzing trace with hash 19342534, now seen corresponding path program 30 times [2020-10-29 03:31:40,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:40,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516105674] [2020-10-29 03:31:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:40,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:40,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:43,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:43,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 03:31:43,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:43,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3024 [2020-10-29 03:31:43,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:43,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:31:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:31:43,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:44,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:44,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:44,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:44,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:44,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:44,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516105674] [2020-10-29 03:31:44,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:44,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:31:44,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878950324] [2020-10-29 03:31:44,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:31:44,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:44,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:31:44,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:31:44,550 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 34 states. [2020-10-29 03:31:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:44,913 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-10-29 03:31:44,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:31:44,914 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2020-10-29 03:31:44,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:44,915 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:31:44,916 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:31:44,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:31:44,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:31:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-29 03:31:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:31:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-10-29 03:31:44,923 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 78 [2020-10-29 03:31:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:44,923 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-10-29 03:31:44,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:31:44,923 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-10-29 03:31:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:31:44,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:44,924 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:44,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:31:44,924 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:44,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1396587112, now seen corresponding path program 31 times [2020-10-29 03:31:44,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:44,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778096385] [2020-10-29 03:31:44,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:48,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:48,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:31:48,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3099 [2020-10-29 03:31:48,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:48,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:31:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:31:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:48,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:48,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:48,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:48,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:48,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:48,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:48,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:48,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:48,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778096385] [2020-10-29 03:31:48,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:48,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:31:48,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063686437] [2020-10-29 03:31:48,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:31:48,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:48,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:31:48,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:31:48,672 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 35 states. [2020-10-29 03:31:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:49,016 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2020-10-29 03:31:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:31:49,017 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2020-10-29 03:31:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:49,019 INFO L225 Difference]: With dead ends: 140 [2020-10-29 03:31:49,019 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:31:49,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:31:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:31:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-29 03:31:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 03:31:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2020-10-29 03:31:49,025 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 80 [2020-10-29 03:31:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:49,026 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2020-10-29 03:31:49,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:31:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2020-10-29 03:31:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:31:49,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:49,027 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:49,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:31:49,027 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:49,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:49,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2078699402, now seen corresponding path program 32 times [2020-10-29 03:31:49,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:49,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085788268] [2020-10-29 03:31:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:52,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:52,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:31:52,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3355 [2020-10-29 03:31:52,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:52,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:31:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:31:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:53,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:53,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:53,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:53,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:53,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:53,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:53,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085788268] [2020-10-29 03:31:53,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:53,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:31:53,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131891951] [2020-10-29 03:31:53,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:31:53,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:53,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:31:53,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:31:53,148 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand 36 states. [2020-10-29 03:31:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:53,367 INFO L93 Difference]: Finished difference Result 142 states and 164 transitions. [2020-10-29 03:31:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:31:53,368 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2020-10-29 03:31:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:53,370 INFO L225 Difference]: With dead ends: 142 [2020-10-29 03:31:53,370 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:31:53,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:31:53,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:31:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-29 03:31:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:31:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2020-10-29 03:31:53,377 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 82 [2020-10-29 03:31:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:53,378 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2020-10-29 03:31:53,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:31:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2020-10-29 03:31:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:31:53,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:53,379 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:53,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:31:53,379 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:53,380 INFO L82 PathProgramCache]: Analyzing trace with hash 458613804, now seen corresponding path program 33 times [2020-10-29 03:31:53,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:53,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180189689] [2020-10-29 03:31:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:31:57,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3711 [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:31:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:57,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:57,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:57,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:57,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:57,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:57,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180189689] [2020-10-29 03:31:57,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:57,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:31:57,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115048927] [2020-10-29 03:31:57,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:31:57,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:57,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:31:57,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:31:57,843 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand 37 states. [2020-10-29 03:31:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:58,135 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2020-10-29 03:31:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:31:58,136 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2020-10-29 03:31:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:58,137 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:31:58,137 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:31:58,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:31:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:31:58,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-29 03:31:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 03:31:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2020-10-29 03:31:58,143 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 84 [2020-10-29 03:31:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:58,144 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2020-10-29 03:31:58,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:31:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2020-10-29 03:31:58,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 03:31:58,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:58,144 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:58,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:31:58,145 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:58,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1665484722, now seen corresponding path program 34 times [2020-10-29 03:31:58,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:58,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578387026] [2020-10-29 03:31:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:58,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:02,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:02,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:32:02,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3849 [2020-10-29 03:32:02,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:02,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:32:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:32:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:02,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:02,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:02,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:02,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:02,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:02,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:02,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:02,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:02,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578387026] [2020-10-29 03:32:02,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:02,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:32:02,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955242744] [2020-10-29 03:32:02,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:32:02,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:02,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:32:02,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:32:02,821 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand 38 states. [2020-10-29 03:32:03,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:03,214 INFO L93 Difference]: Finished difference Result 146 states and 168 transitions. [2020-10-29 03:32:03,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:32:03,215 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2020-10-29 03:32:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:03,216 INFO L225 Difference]: With dead ends: 146 [2020-10-29 03:32:03,216 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 03:32:03,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:32:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 03:32:03,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-29 03:32:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 03:32:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2020-10-29 03:32:03,224 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 86 [2020-10-29 03:32:03,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:03,224 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2020-10-29 03:32:03,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:32:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2020-10-29 03:32:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:32:03,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:03,225 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:03,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:32:03,225 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:03,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1480264688, now seen corresponding path program 35 times [2020-10-29 03:32:03,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:03,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216130273] [2020-10-29 03:32:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:03,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:07,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:07,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:32:07,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4099 [2020-10-29 03:32:07,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:07,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:32:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:32:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:08,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:08,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:08,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:08,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:08,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:08,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216130273] [2020-10-29 03:32:08,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:08,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:32:08,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654020748] [2020-10-29 03:32:08,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:32:08,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:08,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:32:08,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:32:08,232 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand 39 states. [2020-10-29 03:32:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:08,561 INFO L93 Difference]: Finished difference Result 148 states and 170 transitions. [2020-10-29 03:32:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:32:08,561 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2020-10-29 03:32:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:08,562 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:32:08,563 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 03:32:08,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:32:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 03:32:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-29 03:32:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:32:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-10-29 03:32:08,574 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 88 [2020-10-29 03:32:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:08,575 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-10-29 03:32:08,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:32:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-10-29 03:32:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 03:32:08,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:08,576 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:08,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:32:08,576 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:08,577 INFO L82 PathProgramCache]: Analyzing trace with hash 888471314, now seen corresponding path program 36 times [2020-10-29 03:32:08,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:08,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722409349] [2020-10-29 03:32:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:13,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:13,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 03:32:13,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4905 [2020-10-29 03:32:13,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:13,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:32:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 03:32:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:14,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:14,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:14,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:14,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:14,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:14,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:14,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:14,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722409349] [2020-10-29 03:32:14,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:14,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:32:14,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962281647] [2020-10-29 03:32:14,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:32:14,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:14,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:32:14,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:32:14,380 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand 40 states. [2020-10-29 03:32:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:14,803 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-10-29 03:32:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:32:14,803 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2020-10-29 03:32:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:14,804 INFO L225 Difference]: With dead ends: 150 [2020-10-29 03:32:14,804 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:32:14,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:32:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:32:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-29 03:32:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:32:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2020-10-29 03:32:14,811 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 90 [2020-10-29 03:32:14,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:14,811 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2020-10-29 03:32:14,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:32:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2020-10-29 03:32:14,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 03:32:14,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:14,813 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:14,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:32:14,813 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:14,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:14,813 INFO L82 PathProgramCache]: Analyzing trace with hash -889278028, now seen corresponding path program 37 times [2020-10-29 03:32:14,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:14,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872792492] [2020-10-29 03:32:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:14,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:19,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:19,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:32:19,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4738 [2020-10-29 03:32:19,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:19,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 03:32:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:32:19,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:20,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:20,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:20,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:20,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:20,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:20,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:20,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:20,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:20,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872792492] [2020-10-29 03:32:20,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:20,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:32:20,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669606593] [2020-10-29 03:32:20,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:32:20,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:32:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:32:20,504 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 41 states. [2020-10-29 03:32:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:20,894 INFO L93 Difference]: Finished difference Result 152 states and 174 transitions. [2020-10-29 03:32:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:32:20,895 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2020-10-29 03:32:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:20,896 INFO L225 Difference]: With dead ends: 152 [2020-10-29 03:32:20,896 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:32:20,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:32:20,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:32:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-29 03:32:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:32:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2020-10-29 03:32:20,905 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 92 [2020-10-29 03:32:20,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:20,906 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2020-10-29 03:32:20,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:32:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2020-10-29 03:32:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:32:20,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:20,908 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:20,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:32:20,908 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:20,908 INFO L82 PathProgramCache]: Analyzing trace with hash 90588118, now seen corresponding path program 38 times [2020-10-29 03:32:20,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:20,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354226339] [2020-10-29 03:32:20,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:20,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:25,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:25,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:32:25,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:25,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:32:25,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:25,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:32:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:25,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:32:25,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:26,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:26,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:26,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:26,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:26,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:26,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:26,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:26,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:26,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:26,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:26,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:26,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354226339] [2020-10-29 03:32:26,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:26,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:32:26,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32516749] [2020-10-29 03:32:26,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:32:26,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:26,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:32:26,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:32:26,911 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand 42 states. [2020-10-29 03:32:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:27,305 INFO L93 Difference]: Finished difference Result 154 states and 176 transitions. [2020-10-29 03:32:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:32:27,309 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2020-10-29 03:32:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:27,311 INFO L225 Difference]: With dead ends: 154 [2020-10-29 03:32:27,311 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 03:32:27,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:32:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 03:32:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-29 03:32:27,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:32:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2020-10-29 03:32:27,319 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 94 [2020-10-29 03:32:27,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:27,319 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2020-10-29 03:32:27,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:32:27,319 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2020-10-29 03:32:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 03:32:27,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:27,320 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:27,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:32:27,320 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:27,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:27,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1144116600, now seen corresponding path program 39 times [2020-10-29 03:32:27,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:27,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322013645] [2020-10-29 03:32:27,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:27,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:32,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:32,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 03:32:32,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:32,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:32:32,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:32,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 03:32:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:32:32,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:33,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:33,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:33,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:33,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:33,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:33,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:32:33,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:33,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:33,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:33,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:33,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:33,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:33,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322013645] [2020-10-29 03:32:33,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:33,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 03:32:33,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752581618] [2020-10-29 03:32:33,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 03:32:33,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:33,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 03:32:33,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:32:33,356 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand 43 states. [2020-10-29 03:32:33,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:33,747 INFO L93 Difference]: Finished difference Result 156 states and 178 transitions. [2020-10-29 03:32:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 03:32:33,747 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2020-10-29 03:32:33,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:33,749 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:32:33,749 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:32:33,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:32:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:32:33,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-29 03:32:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-29 03:32:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-10-29 03:32:33,756 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 96 [2020-10-29 03:32:33,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:33,756 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-10-29 03:32:33,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 03:32:33,756 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-10-29 03:32:33,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 03:32:33,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:33,757 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:33,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:32:33,757 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:33,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:33,758 INFO L82 PathProgramCache]: Analyzing trace with hash -27294054, now seen corresponding path program 40 times [2020-10-29 03:32:33,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:33,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410569943] [2020-10-29 03:32:33,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:38,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:38,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:32:38,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:32:38,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:38,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 03:32:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 03:32:38,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:39,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:39,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:39,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:39,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:32:39,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:39,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:39,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:39,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410569943] [2020-10-29 03:32:39,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:39,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 03:32:39,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704337828] [2020-10-29 03:32:39,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 03:32:39,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:39,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 03:32:39,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:32:39,824 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 44 states. [2020-10-29 03:32:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:40,247 INFO L93 Difference]: Finished difference Result 158 states and 180 transitions. [2020-10-29 03:32:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:32:40,248 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2020-10-29 03:32:40,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:40,249 INFO L225 Difference]: With dead ends: 158 [2020-10-29 03:32:40,249 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 03:32:40,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:32:40,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 03:32:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-29 03:32:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 03:32:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2020-10-29 03:32:40,258 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 98 [2020-10-29 03:32:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:40,258 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2020-10-29 03:32:40,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 03:32:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2020-10-29 03:32:40,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:32:40,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:40,260 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:40,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:32:40,260 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:40,261 INFO L82 PathProgramCache]: Analyzing trace with hash -471500996, now seen corresponding path program 41 times [2020-10-29 03:32:40,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:40,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408941891] [2020-10-29 03:32:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:40,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:40,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:45,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 03:32:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:32:45,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:45,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 03:32:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 03:32:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:46,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:46,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:46,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:46,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:46,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:46,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:46,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408941891] [2020-10-29 03:32:46,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:46,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-29 03:32:46,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068307947] [2020-10-29 03:32:46,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-29 03:32:46,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:46,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-29 03:32:46,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:32:46,432 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 45 states. [2020-10-29 03:32:46,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:46,904 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-10-29 03:32:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 03:32:46,904 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2020-10-29 03:32:46,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:46,906 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:32:46,906 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:32:46,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:32:46,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:32:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-29 03:32:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 03:32:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2020-10-29 03:32:46,918 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 100 [2020-10-29 03:32:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:46,921 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2020-10-29 03:32:46,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-29 03:32:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2020-10-29 03:32:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 03:32:46,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:46,922 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:46,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:32:46,922 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:46,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:46,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2142357342, now seen corresponding path program 42 times [2020-10-29 03:32:46,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:46,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227397071] [2020-10-29 03:32:46,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:46,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:51,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:51,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 03:32:51,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:51,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:32:51,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:51,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:51,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 03:32:51,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:51,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 03:32:51,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:53,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:53,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:53,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:53,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:53,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:53,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:53,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:53,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227397071] [2020-10-29 03:32:53,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:53,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 03:32:53,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760666910] [2020-10-29 03:32:53,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 03:32:53,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:53,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 03:32:53,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:32:53,103 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand 46 states. [2020-10-29 03:32:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:53,373 INFO L93 Difference]: Finished difference Result 162 states and 184 transitions. [2020-10-29 03:32:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 03:32:53,374 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2020-10-29 03:32:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:53,375 INFO L225 Difference]: With dead ends: 162 [2020-10-29 03:32:53,375 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 03:32:53,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:32:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 03:32:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-29 03:32:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-29 03:32:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2020-10-29 03:32:53,383 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 102 [2020-10-29 03:32:53,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:53,383 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2020-10-29 03:32:53,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 03:32:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2020-10-29 03:32:53,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:32:53,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:53,384 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:53,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 03:32:53,384 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:53,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:53,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1504352000, now seen corresponding path program 43 times [2020-10-29 03:32:53,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:53,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923278382] [2020-10-29 03:32:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:58,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:58,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:32:58,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 03:32:58,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:58,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-29 03:32:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 03:32:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:59,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:59,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:59,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:59,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:59,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:59,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:59,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:59,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:59,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923278382] [2020-10-29 03:32:59,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:59,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-29 03:32:59,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885223258] [2020-10-29 03:32:59,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-29 03:32:59,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:59,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-29 03:32:59,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:32:59,636 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand 47 states. [2020-10-29 03:33:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:00,034 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2020-10-29 03:33:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:33:00,034 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2020-10-29 03:33:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:00,036 INFO L225 Difference]: With dead ends: 164 [2020-10-29 03:33:00,036 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:33:00,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:33:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:33:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-29 03:33:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 03:33:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2020-10-29 03:33:00,044 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 104 [2020-10-29 03:33:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:00,044 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2020-10-29 03:33:00,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-29 03:33:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2020-10-29 03:33:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:33:00,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:00,045 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:00,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 03:33:00,045 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:00,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:00,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1733425630, now seen corresponding path program 44 times [2020-10-29 03:33:00,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:00,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30366178] [2020-10-29 03:33:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:00,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:05,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:05,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 03:33:05,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:05,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:33:05,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:05,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 03:33:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 03:33:05,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:06,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:06,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:06,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:06,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:06,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:06,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:06,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:06,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30366178] [2020-10-29 03:33:06,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:06,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:33:06,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52823410] [2020-10-29 03:33:06,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:33:06,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:06,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:33:06,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:33:06,330 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand 48 states. [2020-10-29 03:33:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:06,581 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-10-29 03:33:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:33:06,582 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2020-10-29 03:33:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:06,583 INFO L225 Difference]: With dead ends: 166 [2020-10-29 03:33:06,583 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 03:33:06,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:33:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 03:33:06,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-29 03:33:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:33:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2020-10-29 03:33:06,589 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 106 [2020-10-29 03:33:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:06,590 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2020-10-29 03:33:06,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:33:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2020-10-29 03:33:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 03:33:06,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:06,591 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:06,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 03:33:06,591 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:06,592 INFO L82 PathProgramCache]: Analyzing trace with hash 613561540, now seen corresponding path program 45 times [2020-10-29 03:33:06,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:06,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798236071] [2020-10-29 03:33:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:06,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:11,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 03:33:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:33:11,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:11,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 03:33:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 03:33:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:12,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:12,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:12,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:12,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:12,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:12,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:12,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:12,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798236071] [2020-10-29 03:33:12,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:12,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-29 03:33:12,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543267089] [2020-10-29 03:33:12,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-29 03:33:12,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:12,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-29 03:33:12,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:33:12,940 INFO L87 Difference]: Start difference. First operand 131 states and 142 transitions. Second operand 49 states. [2020-10-29 03:33:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:13,404 INFO L93 Difference]: Finished difference Result 168 states and 190 transitions. [2020-10-29 03:33:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-29 03:33:13,405 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2020-10-29 03:33:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:13,407 INFO L225 Difference]: With dead ends: 168 [2020-10-29 03:33:13,407 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:33:13,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:33:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:33:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-29 03:33:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 03:33:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2020-10-29 03:33:13,414 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 108 [2020-10-29 03:33:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:13,415 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2020-10-29 03:33:13,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-29 03:33:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2020-10-29 03:33:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 03:33:13,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:13,416 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:13,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 03:33:13,416 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:13,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:13,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1210401510, now seen corresponding path program 46 times [2020-10-29 03:33:13,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:13,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104668473] [2020-10-29 03:33:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:13,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:18,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 03:33:18,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 03:33:18,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:18,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-29 03:33:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 03:33:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:19,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:19,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:19,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:19,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:19,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:19,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:19,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:19,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104668473] [2020-10-29 03:33:19,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:19,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 03:33:19,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647619488] [2020-10-29 03:33:19,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 03:33:19,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:19,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 03:33:19,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:33:19,856 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand 50 states. [2020-10-29 03:33:20,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:20,237 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2020-10-29 03:33:20,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 03:33:20,238 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2020-10-29 03:33:20,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:20,240 INFO L225 Difference]: With dead ends: 170 [2020-10-29 03:33:20,240 INFO L226 Difference]: Without dead ends: 136 [2020-10-29 03:33:20,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:33:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-29 03:33:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-29 03:33:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:33:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-10-29 03:33:20,247 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 110 [2020-10-29 03:33:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:20,247 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-10-29 03:33:20,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 03:33:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-10-29 03:33:20,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:33:20,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:20,248 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:20,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 03:33:20,248 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:20,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:20,249 INFO L82 PathProgramCache]: Analyzing trace with hash -752004984, now seen corresponding path program 47 times [2020-10-29 03:33:20,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:20,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285207682] [2020-10-29 03:33:20,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:20,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:25,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:25,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 03:33:25,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:33:25,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:25,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-29 03:33:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 03:33:25,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:26,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:26,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:26,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:26,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:26,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:26,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:26,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:26,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:26,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285207682] [2020-10-29 03:33:26,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:26,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-29 03:33:26,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205130439] [2020-10-29 03:33:26,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-29 03:33:26,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:26,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-29 03:33:26,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:33:26,749 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 51 states. [2020-10-29 03:33:27,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:27,092 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2020-10-29 03:33:27,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-29 03:33:27,093 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2020-10-29 03:33:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:27,094 INFO L225 Difference]: With dead ends: 172 [2020-10-29 03:33:27,094 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:33:27,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:33:27,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:33:27,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-29 03:33:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:33:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2020-10-29 03:33:27,101 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 112 [2020-10-29 03:33:27,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:27,101 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2020-10-29 03:33:27,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-29 03:33:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2020-10-29 03:33:27,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 03:33:27,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:27,103 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:27,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 03:33:27,103 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:27,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:27,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1134002774, now seen corresponding path program 48 times [2020-10-29 03:33:27,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:27,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224023787] [2020-10-29 03:33:27,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:32,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:32,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 03:33:32,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:32,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:33:32,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:32,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:32,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-29 03:33:32,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:32,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 03:33:32,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:33,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:33,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:33,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:33,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:33,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:33,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:33,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:33,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:33,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224023787] [2020-10-29 03:33:33,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:33,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 03:33:33,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389641950] [2020-10-29 03:33:33,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 03:33:33,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:33,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 03:33:33,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:33:33,651 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand 52 states. [2020-10-29 03:33:33,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:33,997 INFO L93 Difference]: Finished difference Result 174 states and 196 transitions. [2020-10-29 03:33:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 03:33:33,998 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2020-10-29 03:33:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:34,000 INFO L225 Difference]: With dead ends: 174 [2020-10-29 03:33:34,000 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 03:33:34,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:33:34,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 03:33:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-10-29 03:33:34,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-29 03:33:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2020-10-29 03:33:34,006 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 114 [2020-10-29 03:33:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:34,006 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2020-10-29 03:33:34,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 03:33:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2020-10-29 03:33:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 03:33:34,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:34,007 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:34,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 03:33:34,008 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:34,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:34,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1133308492, now seen corresponding path program 49 times [2020-10-29 03:33:34,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:34,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541139654] [2020-10-29 03:33:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:39,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:39,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:33:39,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:39,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 03:33:39,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:39,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-29 03:33:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 03:33:39,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:40,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:40,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:40,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:40,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:40,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:40,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:40,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:40,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:40,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541139654] [2020-10-29 03:33:40,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:40,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-29 03:33:40,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046960226] [2020-10-29 03:33:40,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-29 03:33:40,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:40,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-29 03:33:40,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:33:40,618 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 53 states. [2020-10-29 03:33:40,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:40,965 INFO L93 Difference]: Finished difference Result 176 states and 198 transitions. [2020-10-29 03:33:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 03:33:40,966 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2020-10-29 03:33:40,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:40,967 INFO L225 Difference]: With dead ends: 176 [2020-10-29 03:33:40,967 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:33:40,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:33:40,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:33:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-10-29 03:33:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-29 03:33:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2020-10-29 03:33:40,974 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 116 [2020-10-29 03:33:40,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:40,974 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2020-10-29 03:33:40,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-29 03:33:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2020-10-29 03:33:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:33:40,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:40,975 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:40,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 03:33:40,976 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:40,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1823951250, now seen corresponding path program 50 times [2020-10-29 03:33:40,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:40,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530999021] [2020-10-29 03:33:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 03:33:46,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:33:46,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-29 03:33:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 03:33:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:47,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:47,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:47,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:47,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:47,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:47,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:47,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:47,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:47,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:47,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530999021] [2020-10-29 03:33:47,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:47,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-29 03:33:47,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759186802] [2020-10-29 03:33:47,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-29 03:33:47,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:47,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-29 03:33:47,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:33:47,671 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand 54 states. [2020-10-29 03:33:48,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:48,088 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2020-10-29 03:33:48,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 03:33:48,088 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2020-10-29 03:33:48,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:48,090 INFO L225 Difference]: With dead ends: 178 [2020-10-29 03:33:48,090 INFO L226 Difference]: Without dead ends: 144 [2020-10-29 03:33:48,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:33:48,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-29 03:33:48,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2020-10-29 03:33:48,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 03:33:48,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 154 transitions. [2020-10-29 03:33:48,097 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 154 transitions. Word has length 118 [2020-10-29 03:33:48,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:48,098 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 154 transitions. [2020-10-29 03:33:48,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-29 03:33:48,098 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 154 transitions. [2020-10-29 03:33:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 03:33:48,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:48,099 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:48,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 03:33:48,099 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:48,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:48,100 INFO L82 PathProgramCache]: Analyzing trace with hash -482213360, now seen corresponding path program 51 times [2020-10-29 03:33:48,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:48,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295351402] [2020-10-29 03:33:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:48,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:48,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:53,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:53,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 03:33:53,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:33:53,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:53,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-29 03:33:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 03:33:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:54,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:54,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:54,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:54,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:54,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:54,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:54,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295351402] [2020-10-29 03:33:54,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:54,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-29 03:33:54,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247211226] [2020-10-29 03:33:54,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-29 03:33:54,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:54,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-29 03:33:54,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:33:54,843 INFO L87 Difference]: Start difference. First operand 143 states and 154 transitions. Second operand 55 states. [2020-10-29 03:33:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:55,353 INFO L93 Difference]: Finished difference Result 180 states and 202 transitions. [2020-10-29 03:33:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 03:33:55,354 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2020-10-29 03:33:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:55,355 INFO L225 Difference]: With dead ends: 180 [2020-10-29 03:33:55,356 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 03:33:55,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:33:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 03:33:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2020-10-29 03:33:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-29 03:33:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2020-10-29 03:33:55,364 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 120 [2020-10-29 03:33:55,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:55,365 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2020-10-29 03:33:55,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-29 03:33:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2020-10-29 03:33:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 03:33:55,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:55,366 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:55,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 03:33:55,367 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:55,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:55,367 INFO L82 PathProgramCache]: Analyzing trace with hash 437710130, now seen corresponding path program 52 times [2020-10-29 03:33:55,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:55,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657817167] [2020-10-29 03:33:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:55,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:55,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:00,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 03:34:00,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:34:00,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:00,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 03:34:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 03:34:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:02,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:02,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:02,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:02,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657817167] [2020-10-29 03:34:02,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:02,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 03:34:02,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505678791] [2020-10-29 03:34:02,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 03:34:02,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:02,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 03:34:02,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:34:02,160 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand 56 states. [2020-10-29 03:34:02,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:02,706 INFO L93 Difference]: Finished difference Result 182 states and 204 transitions. [2020-10-29 03:34:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 03:34:02,707 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2020-10-29 03:34:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:02,708 INFO L225 Difference]: With dead ends: 182 [2020-10-29 03:34:02,708 INFO L226 Difference]: Without dead ends: 148 [2020-10-29 03:34:02,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:34:02,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-29 03:34:02,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2020-10-29 03:34:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-29 03:34:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2020-10-29 03:34:02,715 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 122 [2020-10-29 03:34:02,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:02,715 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2020-10-29 03:34:02,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 03:34:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2020-10-29 03:34:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:34:02,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:02,716 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:02,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 03:34:02,717 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:02,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:02,717 INFO L82 PathProgramCache]: Analyzing trace with hash -279078956, now seen corresponding path program 53 times [2020-10-29 03:34:02,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:02,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206244626] [2020-10-29 03:34:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:07,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:07,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:34:07,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:07,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:34:07,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:07,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-29 03:34:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 03:34:07,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:09,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:09,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:09,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:09,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:09,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:09,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:09,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:09,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206244626] [2020-10-29 03:34:09,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:09,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-29 03:34:09,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576254564] [2020-10-29 03:34:09,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-29 03:34:09,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:09,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-29 03:34:09,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:34:09,623 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand 57 states. [2020-10-29 03:34:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:10,202 INFO L93 Difference]: Finished difference Result 184 states and 206 transitions. [2020-10-29 03:34:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-29 03:34:10,203 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2020-10-29 03:34:10,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:10,204 INFO L225 Difference]: With dead ends: 184 [2020-10-29 03:34:10,204 INFO L226 Difference]: Without dead ends: 150 [2020-10-29 03:34:10,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:34:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-29 03:34:10,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2020-10-29 03:34:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:34:10,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2020-10-29 03:34:10,210 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 124 [2020-10-29 03:34:10,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:10,210 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2020-10-29 03:34:10,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-29 03:34:10,210 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2020-10-29 03:34:10,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 03:34:10,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:10,211 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:10,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 03:34:10,211 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:10,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:10,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1918623242, now seen corresponding path program 54 times [2020-10-29 03:34:10,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:10,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807419134] [2020-10-29 03:34:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:10,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:10,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:15,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:15,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 03:34:15,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:34:15,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:15,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-29 03:34:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 03:34:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:17,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:17,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:17,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:17,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:17,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:17,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:17,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:17,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807419134] [2020-10-29 03:34:17,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:17,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-29 03:34:17,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287904296] [2020-10-29 03:34:17,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-29 03:34:17,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:17,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-29 03:34:17,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:34:17,113 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 58 states. [2020-10-29 03:34:17,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:17,479 INFO L93 Difference]: Finished difference Result 186 states and 208 transitions. [2020-10-29 03:34:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 03:34:17,479 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2020-10-29 03:34:17,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:17,481 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:34:17,481 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 03:34:17,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:34:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 03:34:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-10-29 03:34:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 03:34:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-10-29 03:34:17,488 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 126 [2020-10-29 03:34:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:17,489 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-10-29 03:34:17,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-29 03:34:17,489 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-10-29 03:34:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 03:34:17,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:17,490 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:17,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-29 03:34:17,490 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:17,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:17,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1267684456, now seen corresponding path program 55 times [2020-10-29 03:34:17,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:17,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092468714] [2020-10-29 03:34:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 03:34:22,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 03:34:22,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-29 03:34:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 03:34:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:24,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:24,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:24,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:24,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:24,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:24,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092468714] [2020-10-29 03:34:24,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:24,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-29 03:34:24,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379493219] [2020-10-29 03:34:24,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-29 03:34:24,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:24,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-29 03:34:24,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:34:24,583 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 59 states. [2020-10-29 03:34:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:25,135 INFO L93 Difference]: Finished difference Result 188 states and 210 transitions. [2020-10-29 03:34:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-29 03:34:25,135 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 128 [2020-10-29 03:34:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:25,137 INFO L225 Difference]: With dead ends: 188 [2020-10-29 03:34:25,137 INFO L226 Difference]: Without dead ends: 154 [2020-10-29 03:34:25,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:34:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-29 03:34:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2020-10-29 03:34:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-29 03:34:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2020-10-29 03:34:25,143 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 128 [2020-10-29 03:34:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:25,144 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2020-10-29 03:34:25,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-29 03:34:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2020-10-29 03:34:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 03:34:25,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:25,145 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:25,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-29 03:34:25,145 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:25,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:25,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1514230970, now seen corresponding path program 56 times [2020-10-29 03:34:25,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:25,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121409883] [2020-10-29 03:34:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:30,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:30,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 03:34:30,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:30,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 03:34:30,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:30,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-29 03:34:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 03:34:30,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:32,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:32,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:32,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:32,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:32,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:32,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:32,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:32,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:32,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:32,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:32,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:32,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121409883] [2020-10-29 03:34:32,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:32,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-29 03:34:32,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391127961] [2020-10-29 03:34:32,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-29 03:34:32,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:32,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-29 03:34:32,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 03:34:32,386 INFO L87 Difference]: Start difference. First operand 153 states and 164 transitions. Second operand 60 states. [2020-10-29 03:34:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:33,000 INFO L93 Difference]: Finished difference Result 190 states and 212 transitions. [2020-10-29 03:34:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-29 03:34:33,001 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 130 [2020-10-29 03:34:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:33,002 INFO L225 Difference]: With dead ends: 190 [2020-10-29 03:34:33,002 INFO L226 Difference]: Without dead ends: 156 [2020-10-29 03:34:33,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 03:34:33,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-29 03:34:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2020-10-29 03:34:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-29 03:34:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-10-29 03:34:33,009 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 130 [2020-10-29 03:34:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:33,010 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-10-29 03:34:33,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-29 03:34:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-10-29 03:34:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 03:34:33,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:33,011 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:33,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-29 03:34:33,011 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:33,012 INFO L82 PathProgramCache]: Analyzing trace with hash -829670052, now seen corresponding path program 57 times [2020-10-29 03:34:33,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:33,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947959218] [2020-10-29 03:34:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:33,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking...