/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:00:08,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:00:08,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:00:08,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:00:08,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:00:08,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:00:08,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:00:08,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:00:08,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:00:08,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:00:08,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:00:08,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:00:08,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:00:08,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:00:08,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:00:08,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:00:08,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:00:08,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:00:08,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:00:08,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:00:08,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:00:08,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:00:08,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:00:08,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:00:08,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:00:08,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:00:08,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:00:08,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:00:08,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:00:08,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 00:00:08,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:00:08,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:00:08,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:00:08,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:00:08,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:00:08,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:00:08,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:00:08,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:00:08,794 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:00:08,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:00:08,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:00:08,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:00:08,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:00:08,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:00:08,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:00:08,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:00:08,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:00:08,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:00:08,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:00:08,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:00:08,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:00:08,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:00:08,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:00:08,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:00:08,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:00:08,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:00:08,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:00:08,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:00:08,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:00:08,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:00:08,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:00:08,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:00:08,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:00:08,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:00:09,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:00:09,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:00:09,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:00:09,243 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:00:09,244 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:00:09,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40.c [2020-10-27 00:00:09,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19efd726a/0f5d6b420b034dc084e57ff6fb025ba3/FLAG7444a7caf [2020-10-27 00:00:10,341 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:00:10,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label40.c [2020-10-27 00:00:10,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19efd726a/0f5d6b420b034dc084e57ff6fb025ba3/FLAG7444a7caf [2020-10-27 00:00:10,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19efd726a/0f5d6b420b034dc084e57ff6fb025ba3 [2020-10-27 00:00:10,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:00:10,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:00:10,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:00:10,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:00:10,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:00:10,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:10" (1/1) ... [2020-10-27 00:00:10,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d9c990f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:10, skipping insertion in model container [2020-10-27 00:00:10,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:10" (1/1) ... [2020-10-27 00:00:10,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:00:10,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:00:11,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:00:11,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:00:12,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:00:12,231 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:00:12,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:12 WrapperNode [2020-10-27 00:00:12,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:00:12,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:00:12,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:00:12,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:00:12,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:12" (1/1) ... [2020-10-27 00:00:12,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:12" (1/1) ... [2020-10-27 00:00:12,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:12" (1/1) ... [2020-10-27 00:00:12,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:12" (1/1) ... [2020-10-27 00:00:12,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:12" (1/1) ... [2020-10-27 00:00:12,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:12" (1/1) ... [2020-10-27 00:00:12,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:12" (1/1) ... [2020-10-27 00:00:12,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:00:12,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:00:12,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:00:12,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:00:12,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:00:12,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:00:12,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:00:12,541 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:00:12,541 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:00:12,541 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:00:12,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:00:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:00:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:00:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:00:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:00:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:00:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:00:12,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:00:12,543 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:00:12,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:00:12,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:00:12,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:00:12,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:00:12,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:00:12,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:00:12,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:00:15,649 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:00:15,650 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:00:15,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:15 BoogieIcfgContainer [2020-10-27 00:00:15,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:00:15,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:00:15,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:00:15,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:00:15,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:00:10" (1/3) ... [2020-10-27 00:00:15,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd6699d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:15, skipping insertion in model container [2020-10-27 00:00:15,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:12" (2/3) ... [2020-10-27 00:00:15,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd6699d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:15, skipping insertion in model container [2020-10-27 00:00:15,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:15" (3/3) ... [2020-10-27 00:00:15,662 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label40.c [2020-10-27 00:00:15,675 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:00:15,681 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:00:15,694 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:00:15,725 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:00:15,726 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:00:15,726 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:00:15,726 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:00:15,726 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:00:15,726 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:00:15,726 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:00:15,727 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:00:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:00:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 00:00:15,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:15,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:15,767 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:15,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1005535700, now seen corresponding path program 1 times [2020-10-27 00:00:15,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:15,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397199773] [2020-10-27 00:00:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:16,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:16,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 00:00:16,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:16,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-27 00:00:16,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:16,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:16,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:00:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:00:16,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:16,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:16,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:16,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:00:16,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:16,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:16,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:00:16,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397199773] [2020-10-27 00:00:16,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:00:16,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:00:16,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034382192] [2020-10-27 00:00:16,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:00:16,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:17,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:00:17,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:00:17,015 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 00:00:21,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:21,816 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-27 00:00:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:00:21,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-27 00:00:21,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:21,854 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 00:00:21,854 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 00:00:21,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:00:21,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 00:00:22,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-27 00:00:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-27 00:00:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-27 00:00:22,017 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 70 [2020-10-27 00:00:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:22,018 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-27 00:00:22,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:00:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-27 00:00:22,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 00:00:22,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:22,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:22,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:00:22,034 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:22,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:22,034 INFO L82 PathProgramCache]: Analyzing trace with hash -980069172, now seen corresponding path program 1 times [2020-10-27 00:00:22,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:22,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504567332] [2020-10-27 00:00:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:22,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:22,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:23,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:00:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:00:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-10-27 00:00:23,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:00:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:23,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:23,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:23,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:23,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:23,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:00:23,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:23,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:23,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:23,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:23,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:00:23,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 00:00:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:00:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:00:23,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504567332] [2020-10-27 00:00:23,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:00:23,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:00:23,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844859833] [2020-10-27 00:00:23,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:23,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:23,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:23,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:23,872 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-27 00:00:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:29,231 INFO L93 Difference]: Finished difference Result 2092 states and 3103 transitions. [2020-10-27 00:00:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:00:29,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-27 00:00:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:29,246 INFO L225 Difference]: With dead ends: 2092 [2020-10-27 00:00:29,246 INFO L226 Difference]: Without dead ends: 1405 [2020-10-27 00:00:29,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:00:29,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-10-27 00:00:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1384. [2020-10-27 00:00:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-10-27 00:00:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1820 transitions. [2020-10-27 00:00:29,342 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1820 transitions. Word has length 146 [2020-10-27 00:00:29,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:29,344 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 1820 transitions. [2020-10-27 00:00:29,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1820 transitions. [2020-10-27 00:00:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 00:00:29,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:29,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:29,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:00:29,355 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:29,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:29,357 INFO L82 PathProgramCache]: Analyzing trace with hash 534424562, now seen corresponding path program 1 times [2020-10-27 00:00:29,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:29,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081722234] [2020-10-27 00:00:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:29,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:29,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 00:00:29,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:00:29,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-27 00:00:29,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:00:29,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 00:00:29,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:29,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:29,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:29,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:29,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:29,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:29,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:00:29,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:29,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:29,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:29,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:30,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:30,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:00:30,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:30,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:00:30,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:30,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:30,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:30,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:00:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:00:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:00:30,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081722234] [2020-10-27 00:00:30,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:30,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:00:30,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818301758] [2020-10-27 00:00:30,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:00:30,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:30,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:00:30,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:00:30,149 INFO L87 Difference]: Start difference. First operand 1384 states and 1820 transitions. Second operand 5 states. [2020-10-27 00:00:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:34,818 INFO L93 Difference]: Finished difference Result 3467 states and 4733 transitions. [2020-10-27 00:00:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:00:34,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-27 00:00:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:34,831 INFO L225 Difference]: With dead ends: 3467 [2020-10-27 00:00:34,831 INFO L226 Difference]: Without dead ends: 2089 [2020-10-27 00:00:34,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:00:34,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-10-27 00:00:34,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2083. [2020-10-27 00:00:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-10-27 00:00:34,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2630 transitions. [2020-10-27 00:00:34,905 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2630 transitions. Word has length 161 [2020-10-27 00:00:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:34,906 INFO L481 AbstractCegarLoop]: Abstraction has 2083 states and 2630 transitions. [2020-10-27 00:00:34,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:00:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2630 transitions. [2020-10-27 00:00:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-27 00:00:34,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:34,913 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:34,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:00:34,913 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1010545782, now seen corresponding path program 1 times [2020-10-27 00:00:34,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:34,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060022349] [2020-10-27 00:00:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:37,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:39,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:39,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 00:00:39,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:00:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4704 [2020-10-27 00:00:39,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:39,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:00:39,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 00:00:39,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:39,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:39,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:39,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:39,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:39,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:00:39,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:39,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:39,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:39,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:39,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:39,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:39,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:39,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:00:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 00:00:39,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:00:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:40,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:00:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:40,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:40,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:40,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:40,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 00:00:40,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:40,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:40,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:00:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:40,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 00:00:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 124 proven. 95 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:00:40,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060022349] [2020-10-27 00:00:40,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:40,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:40,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075730843] [2020-10-27 00:00:40,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:40,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:40,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:40,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:40,422 INFO L87 Difference]: Start difference. First operand 2083 states and 2630 transitions. Second operand 7 states. [2020-10-27 00:00:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:45,759 INFO L93 Difference]: Finished difference Result 4977 states and 6495 transitions. [2020-10-27 00:00:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:00:45,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-27 00:00:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:45,784 INFO L225 Difference]: With dead ends: 4977 [2020-10-27 00:00:45,785 INFO L226 Difference]: Without dead ends: 2900 [2020-10-27 00:00:45,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:00:45,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-10-27 00:00:45,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 2805. [2020-10-27 00:00:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2020-10-27 00:00:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3422 transitions. [2020-10-27 00:00:45,962 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3422 transitions. Word has length 299 [2020-10-27 00:00:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:45,962 INFO L481 AbstractCegarLoop]: Abstraction has 2805 states and 3422 transitions. [2020-10-27 00:00:45,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3422 transitions. [2020-10-27 00:00:45,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-27 00:00:45,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:45,971 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:45,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:00:45,971 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:45,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:45,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1129266992, now seen corresponding path program 1 times [2020-10-27 00:00:45,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:45,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043131585] [2020-10-27 00:00:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:47,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:51,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:51,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-27 00:00:51,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 00:00:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 00:00:51,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 00:00:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-27 00:00:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:51,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:51,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:51,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:51,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:00:51,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:51,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:51,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:51,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:00:51,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:00:51,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 00:00:51,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:00:51,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:51,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:00:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:51,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:51,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:00:51,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:00:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 00:00:51,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 00:00:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:51,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 00:00:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:51,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:51,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 00:00:51,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:51,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 00:00:51,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 00:00:51,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 188 proven. 4 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-10-27 00:00:52,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043131585] [2020-10-27 00:00:52,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:52,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:00:52,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140196240] [2020-10-27 00:00:52,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:52,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:52,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:52,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:52,043 INFO L87 Difference]: Start difference. First operand 2805 states and 3422 transitions. Second operand 7 states. [2020-10-27 00:00:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:57,687 INFO L93 Difference]: Finished difference Result 6368 states and 8189 transitions. [2020-10-27 00:00:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:00:57,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-27 00:00:57,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:57,706 INFO L225 Difference]: With dead ends: 6368 [2020-10-27 00:00:57,706 INFO L226 Difference]: Without dead ends: 3511 [2020-10-27 00:00:57,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:00:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2020-10-27 00:00:57,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3474. [2020-10-27 00:00:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3474 states. [2020-10-27 00:00:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 3781 transitions. [2020-10-27 00:00:57,822 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 3781 transitions. Word has length 342 [2020-10-27 00:00:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:57,823 INFO L481 AbstractCegarLoop]: Abstraction has 3474 states and 3781 transitions. [2020-10-27 00:00:57,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 3781 transitions. [2020-10-27 00:00:57,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-27 00:00:57,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:57,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:57,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:00:57,833 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:57,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:57,833 INFO L82 PathProgramCache]: Analyzing trace with hash -912539256, now seen corresponding path program 1 times [2020-10-27 00:00:57,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:57,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411401918] [2020-10-27 00:00:57,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:58,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:00,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-27 00:01:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2418 [2020-10-27 00:01:00,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:01:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:01:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:00,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:00,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:00,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:01:00,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:00,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:00,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:00,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:00,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:01:00,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 00:01:00,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:01:00,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:00,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:01:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:01,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:01,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:01,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:01,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 00:01:01,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:01:01,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:01:01,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411401918] [2020-10-27 00:01:01,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:01,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:01,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249836647] [2020-10-27 00:01:01,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:01,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:01,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:01,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:01,907 INFO L87 Difference]: Start difference. First operand 3474 states and 3781 transitions. Second operand 7 states. [2020-10-27 00:01:06,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:06,431 INFO L93 Difference]: Finished difference Result 7650 states and 8504 transitions. [2020-10-27 00:01:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:06,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 438 [2020-10-27 00:01:06,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:06,456 INFO L225 Difference]: With dead ends: 7650 [2020-10-27 00:01:06,456 INFO L226 Difference]: Without dead ends: 4519 [2020-10-27 00:01:06,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:01:06,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2020-10-27 00:01:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 4502. [2020-10-27 00:01:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4502 states. [2020-10-27 00:01:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 4840 transitions. [2020-10-27 00:01:06,605 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 4840 transitions. Word has length 438 [2020-10-27 00:01:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:06,606 INFO L481 AbstractCegarLoop]: Abstraction has 4502 states and 4840 transitions. [2020-10-27 00:01:06,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 4840 transitions. [2020-10-27 00:01:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-27 00:01:06,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:06,621 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:06,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:01:06,621 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:06,622 INFO L82 PathProgramCache]: Analyzing trace with hash 431586856, now seen corresponding path program 1 times [2020-10-27 00:01:06,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:06,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725076254] [2020-10-27 00:01:06,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:08,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:08,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-27 00:01:08,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:08,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1936 [2020-10-27 00:01:08,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:01:08,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:01:08,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:08,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:08,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:08,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:08,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:08,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:01:08,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:08,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:08,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:08,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:08,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:08,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:09,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:09,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:09,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:09,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 00:01:09,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:09,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:09,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:09,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:09,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:09,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:09,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:01:09,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:09,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 00:01:09,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:01:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:01:09,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:01:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:09,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:09,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:09,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-27 00:01:09,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:01:09,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 00:01:10,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725076254] [2020-10-27 00:01:10,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:10,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:01:10,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227028716] [2020-10-27 00:01:10,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:01:10,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:10,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:01:10,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:01:10,184 INFO L87 Difference]: Start difference. First operand 4502 states and 4840 transitions. Second operand 8 states. [2020-10-27 00:01:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:16,578 INFO L93 Difference]: Finished difference Result 10734 states and 11803 transitions. [2020-10-27 00:01:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 00:01:16,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 546 [2020-10-27 00:01:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:16,610 INFO L225 Difference]: With dead ends: 10734 [2020-10-27 00:01:16,610 INFO L226 Difference]: Without dead ends: 6916 [2020-10-27 00:01:16,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-27 00:01:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2020-10-27 00:01:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 6561. [2020-10-27 00:01:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6561 states. [2020-10-27 00:01:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6561 states to 6561 states and 7104 transitions. [2020-10-27 00:01:16,793 INFO L78 Accepts]: Start accepts. Automaton has 6561 states and 7104 transitions. Word has length 546 [2020-10-27 00:01:16,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:16,794 INFO L481 AbstractCegarLoop]: Abstraction has 6561 states and 7104 transitions. [2020-10-27 00:01:16,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:01:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6561 states and 7104 transitions. [2020-10-27 00:01:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-27 00:01:16,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:16,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:16,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:01:16,813 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:16,814 INFO L82 PathProgramCache]: Analyzing trace with hash 102939304, now seen corresponding path program 1 times [2020-10-27 00:01:16,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:16,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348567640] [2020-10-27 00:01:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:17,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:22,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:22,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 580 [2020-10-27 00:01:22,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:01:22,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 00:01:22,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:01:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:22,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-27 00:01:22,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:22,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:22,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:22,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:01:22,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:22,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:22,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:22,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:22,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:22,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-27 00:01:22,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:01:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:23,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:23,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:23,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:23,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:01:23,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-27 00:01:23,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:01:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-10-27 00:01:24,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348567640] [2020-10-27 00:01:24,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:24,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:01:24,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703739972] [2020-10-27 00:01:24,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:24,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:24,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:24,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:24,711 INFO L87 Difference]: Start difference. First operand 6561 states and 7104 transitions. Second operand 7 states. [2020-10-27 00:01:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:28,229 INFO L93 Difference]: Finished difference Result 12451 states and 13532 transitions. [2020-10-27 00:01:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:01:28,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 566 [2020-10-27 00:01:28,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:28,260 INFO L225 Difference]: With dead ends: 12451 [2020-10-27 00:01:28,261 INFO L226 Difference]: Without dead ends: 6574 [2020-10-27 00:01:28,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:01:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6574 states. [2020-10-27 00:01:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6574 to 6563. [2020-10-27 00:01:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6563 states. [2020-10-27 00:01:28,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6563 states to 6563 states and 7105 transitions. [2020-10-27 00:01:28,440 INFO L78 Accepts]: Start accepts. Automaton has 6563 states and 7105 transitions. Word has length 566 [2020-10-27 00:01:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:28,441 INFO L481 AbstractCegarLoop]: Abstraction has 6563 states and 7105 transitions. [2020-10-27 00:01:28,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:28,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6563 states and 7105 transitions. [2020-10-27 00:01:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-27 00:01:28,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:28,452 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:28,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:01:28,452 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:28,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1832358222, now seen corresponding path program 1 times [2020-10-27 00:01:28,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:28,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991945056] [2020-10-27 00:01:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:28,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:30,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:30,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 619 [2020-10-27 00:01:30,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:30,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2191 [2020-10-27 00:01:30,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-27 00:01:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:01:30,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:30,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:30,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:30,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:30,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:30,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:30,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:01:30,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:30,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:31,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:31,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:31,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:31,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:01:31,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:31,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:31,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:01:31,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:31,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 00:01:31,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 00:01:31,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:31,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:01:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:31,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:31,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:31,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:01:31,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:01:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 443 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-27 00:01:31,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991945056] [2020-10-27 00:01:31,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:31,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:31,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332419688] [2020-10-27 00:01:31,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:31,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:31,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:31,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:31,876 INFO L87 Difference]: Start difference. First operand 6563 states and 7105 transitions. Second operand 7 states. [2020-10-27 00:01:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:38,120 INFO L93 Difference]: Finished difference Result 14164 states and 15576 transitions. [2020-10-27 00:01:38,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:38,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 603 [2020-10-27 00:01:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:38,150 INFO L225 Difference]: With dead ends: 14164 [2020-10-27 00:01:38,150 INFO L226 Difference]: Without dead ends: 8285 [2020-10-27 00:01:38,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:01:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8285 states. [2020-10-27 00:01:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8285 to 8276. [2020-10-27 00:01:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8276 states. [2020-10-27 00:01:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8276 states to 8276 states and 8983 transitions. [2020-10-27 00:01:38,343 INFO L78 Accepts]: Start accepts. Automaton has 8276 states and 8983 transitions. Word has length 603 [2020-10-27 00:01:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:38,344 INFO L481 AbstractCegarLoop]: Abstraction has 8276 states and 8983 transitions. [2020-10-27 00:01:38,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8276 states and 8983 transitions. [2020-10-27 00:01:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2020-10-27 00:01:38,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:38,354 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:38,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:01:38,355 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:38,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1831727150, now seen corresponding path program 1 times [2020-10-27 00:01:38,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:38,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231294391] [2020-10-27 00:01:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:39,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:39,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 653 [2020-10-27 00:01:39,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1272 [2020-10-27 00:01:39,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-27 00:01:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 00:01:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:39,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:39,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:39,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:39,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:01:39,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:39,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:40,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:40,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:01:40,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:40,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:40,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:01:40,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:40,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 00:01:40,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 00:01:40,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:01:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:40,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:40,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:01:40,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:40,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 00:01:40,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 00:01:40,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 505 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-27 00:01:40,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231294391] [2020-10-27 00:01:40,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:40,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:40,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180373343] [2020-10-27 00:01:40,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:40,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:40,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:40,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:40,762 INFO L87 Difference]: Start difference. First operand 8276 states and 8983 transitions. Second operand 7 states. [2020-10-27 00:01:45,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:45,277 INFO L93 Difference]: Finished difference Result 18252 states and 20092 transitions. [2020-10-27 00:01:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:01:45,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 637 [2020-10-27 00:01:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:45,309 INFO L225 Difference]: With dead ends: 18252 [2020-10-27 00:01:45,309 INFO L226 Difference]: Without dead ends: 10660 [2020-10-27 00:01:45,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:01:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10660 states. [2020-10-27 00:01:45,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10660 to 10647. [2020-10-27 00:01:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10647 states. [2020-10-27 00:01:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10647 states to 10647 states and 11417 transitions. [2020-10-27 00:01:45,531 INFO L78 Accepts]: Start accepts. Automaton has 10647 states and 11417 transitions. Word has length 637 [2020-10-27 00:01:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:45,533 INFO L481 AbstractCegarLoop]: Abstraction has 10647 states and 11417 transitions. [2020-10-27 00:01:45,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:45,533 INFO L276 IsEmpty]: Start isEmpty. Operand 10647 states and 11417 transitions. [2020-10-27 00:01:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2020-10-27 00:01:45,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:45,543 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:45,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:01:45,543 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:45,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1958522690, now seen corresponding path program 1 times [2020-10-27 00:01:45,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:45,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098679206] [2020-10-27 00:01:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:45,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:46,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:46,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 709 [2020-10-27 00:01:46,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-10-27 00:01:46,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-27 00:01:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 00:01:46,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:46,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:46,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:46,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:46,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:46,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:01:46,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:46,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:46,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:46,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:46,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:01:46,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:46,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:01:46,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:46,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:46,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:46,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:46,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:01:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:47,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:47,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:01:47,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:47,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:01:47,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:47,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:47,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:01:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:47,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:47,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 00:01:47,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:47,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 00:01:47,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-27 00:01:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 189 proven. 3 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-10-27 00:01:47,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098679206] [2020-10-27 00:01:47,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:47,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:01:47,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469407910] [2020-10-27 00:01:47,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:01:47,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:47,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:01:47,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:01:47,721 INFO L87 Difference]: Start difference. First operand 10647 states and 11417 transitions. Second operand 5 states. [2020-10-27 00:01:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:51,000 INFO L93 Difference]: Finished difference Result 22639 states and 24367 transitions. [2020-10-27 00:01:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:01:51,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 693 [2020-10-27 00:01:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:51,050 INFO L225 Difference]: With dead ends: 22639 [2020-10-27 00:01:51,050 INFO L226 Difference]: Without dead ends: 12676 [2020-10-27 00:01:51,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:01:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12676 states. [2020-10-27 00:01:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12676 to 12671. [2020-10-27 00:01:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12671 states. [2020-10-27 00:01:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12671 states to 12671 states and 13543 transitions. [2020-10-27 00:01:51,302 INFO L78 Accepts]: Start accepts. Automaton has 12671 states and 13543 transitions. Word has length 693 [2020-10-27 00:01:51,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:51,304 INFO L481 AbstractCegarLoop]: Abstraction has 12671 states and 13543 transitions. [2020-10-27 00:01:51,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:01:51,304 INFO L276 IsEmpty]: Start isEmpty. Operand 12671 states and 13543 transitions. [2020-10-27 00:01:51,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2020-10-27 00:01:51,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:51,325 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:51,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:01:51,325 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:51,326 INFO L82 PathProgramCache]: Analyzing trace with hash -425005770, now seen corresponding path program 1 times [2020-10-27 00:01:51,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:51,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733982881] [2020-10-27 00:01:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:51,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:56,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:56,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 969 [2020-10-27 00:01:56,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:01:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 00:01:56,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:01:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 00:01:56,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:56,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:56,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:56,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:56,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:01:56,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:56,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:56,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:01:56,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:56,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:01:56,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:56,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:56,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:56,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:56,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:01:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:57,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:57,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:01:57,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:01:57,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:01:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:57,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:01:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:57,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:57,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:57,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:01:57,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:57,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 00:01:57,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:57,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:57,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:57,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 00:01:57,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:57,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-27 00:01:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:57,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:57,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:57,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:01:57,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:57,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:01:57,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:01:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:57,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-27 00:01:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:57,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:57,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:01:57,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:57,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:01:57,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:57,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:57,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:01:57,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:57,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 651 proven. 250 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2020-10-27 00:01:58,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733982881] [2020-10-27 00:01:58,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:58,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:58,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364531540] [2020-10-27 00:01:58,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:58,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:58,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:58,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:58,399 INFO L87 Difference]: Start difference. First operand 12671 states and 13543 transitions. Second operand 7 states. [2020-10-27 00:02:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:04,453 INFO L93 Difference]: Finished difference Result 27400 states and 29632 transitions. [2020-10-27 00:02:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:02:04,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 949 [2020-10-27 00:02:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:04,497 INFO L225 Difference]: With dead ends: 27400 [2020-10-27 00:02:04,498 INFO L226 Difference]: Without dead ends: 15413 [2020-10-27 00:02:04,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:04,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15413 states. [2020-10-27 00:02:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15413 to 15407. [2020-10-27 00:02:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15407 states. [2020-10-27 00:02:04,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15407 states to 15407 states and 16530 transitions. [2020-10-27 00:02:04,776 INFO L78 Accepts]: Start accepts. Automaton has 15407 states and 16530 transitions. Word has length 949 [2020-10-27 00:02:04,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:04,777 INFO L481 AbstractCegarLoop]: Abstraction has 15407 states and 16530 transitions. [2020-10-27 00:02:04,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 15407 states and 16530 transitions. [2020-10-27 00:02:04,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-27 00:02:04,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:04,799 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:04,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:02:04,799 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:04,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:04,800 INFO L82 PathProgramCache]: Analyzing trace with hash -276194182, now seen corresponding path program 1 times [2020-10-27 00:02:04,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:04,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244006454] [2020-10-27 00:02:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:05,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:05,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:06,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:09,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:10,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:10,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-27 00:02:10,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 00:02:10,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-27 00:02:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 00:02:10,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:10,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:10,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:10,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:10,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:10,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:02:10,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:10,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:10,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:10,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:10,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:10,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:10,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:10,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:10,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:10,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 00:02:10,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:10,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:10,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:10,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:10,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:10,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:10,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:10,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:10,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:02:10,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:10,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:02:10,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:10,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:02:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:10,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:10,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:10,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:02:10,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:10,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 00:02:10,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 00:02:10,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:10,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-27 00:02:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:11,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:11,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:02:11,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:11,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 00:02:11,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 00:02:11,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-27 00:02:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:11,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:11,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:11,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:02:11,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:11,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1733 backedges. 755 proven. 109 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2020-10-27 00:02:11,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244006454] [2020-10-27 00:02:11,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:11,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:02:11,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400433785] [2020-10-27 00:02:11,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:02:11,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:11,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:02:11,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:02:11,909 INFO L87 Difference]: Start difference. First operand 15407 states and 16530 transitions. Second operand 8 states. [2020-10-27 00:02:16,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:16,971 INFO L93 Difference]: Finished difference Result 34854 states and 37807 transitions. [2020-10-27 00:02:16,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:02:16,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 951 [2020-10-27 00:02:16,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:17,025 INFO L225 Difference]: With dead ends: 34854 [2020-10-27 00:02:17,025 INFO L226 Difference]: Without dead ends: 20133 [2020-10-27 00:02:17,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:17,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20133 states. [2020-10-27 00:02:17,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20133 to 19796. [2020-10-27 00:02:17,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19796 states. [2020-10-27 00:02:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19796 states to 19796 states and 21376 transitions. [2020-10-27 00:02:17,377 INFO L78 Accepts]: Start accepts. Automaton has 19796 states and 21376 transitions. Word has length 951 [2020-10-27 00:02:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:17,378 INFO L481 AbstractCegarLoop]: Abstraction has 19796 states and 21376 transitions. [2020-10-27 00:02:17,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:02:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 19796 states and 21376 transitions. [2020-10-27 00:02:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1197 [2020-10-27 00:02:17,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:17,413 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:17,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:02:17,414 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1411364584, now seen corresponding path program 1 times [2020-10-27 00:02:17,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:17,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188679809] [2020-10-27 00:02:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:17,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:18,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:18,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1222 [2020-10-27 00:02:22,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 00:02:22,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:22,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:02:22,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:02:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:22,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:22,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:02:22,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:22,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:22,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:22,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:02:22,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:22,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:02:23,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 00:02:23,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:02:23,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:02:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:23,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-27 00:02:23,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:23,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:02:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:02:23,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:02:23,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:02:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-27 00:02:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:02:23,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:02:23,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:02:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2020-10-27 00:02:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:02:23,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:02:23,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:02:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:23,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 882 [2020-10-27 00:02:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:23,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:23,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:23,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:02:23,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:02:23,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:02:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:24,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1024 [2020-10-27 00:02:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:24,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:24,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:24,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:24,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:02:24,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3402 backedges. 793 proven. 494 refuted. 0 times theorem prover too weak. 2115 trivial. 0 not checked. [2020-10-27 00:02:24,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188679809] [2020-10-27 00:02:24,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:24,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:24,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315440683] [2020-10-27 00:02:24,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:24,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:24,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:24,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:24,901 INFO L87 Difference]: Start difference. First operand 19796 states and 21376 transitions. Second operand 7 states. [2020-10-27 00:02:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:30,138 INFO L93 Difference]: Finished difference Result 39247 states and 42416 transitions. [2020-10-27 00:02:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:02:30,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1196 [2020-10-27 00:02:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:30,188 INFO L225 Difference]: With dead ends: 39247 [2020-10-27 00:02:30,188 INFO L226 Difference]: Without dead ends: 20137 [2020-10-27 00:02:30,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20137 states. [2020-10-27 00:02:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20137 to 20133. [2020-10-27 00:02:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20133 states. [2020-10-27 00:02:30,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20133 states to 20133 states and 21717 transitions. [2020-10-27 00:02:30,558 INFO L78 Accepts]: Start accepts. Automaton has 20133 states and 21717 transitions. Word has length 1196 [2020-10-27 00:02:30,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:30,559 INFO L481 AbstractCegarLoop]: Abstraction has 20133 states and 21717 transitions. [2020-10-27 00:02:30,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:30,559 INFO L276 IsEmpty]: Start isEmpty. Operand 20133 states and 21717 transitions. [2020-10-27 00:02:30,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1240 [2020-10-27 00:02:30,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:30,601 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:30,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:02:30,601 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:30,602 INFO L82 PathProgramCache]: Analyzing trace with hash 801329606, now seen corresponding path program 1 times [2020-10-27 00:02:30,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:30,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508237015] [2020-10-27 00:02:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:31,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:35,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:35,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1263 [2020-10-27 00:02:35,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:35,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 00:02:35,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:02:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:02:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:36,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:36,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:36,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:36,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:02:36,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:36,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:36,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:36,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:36,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:36,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:02:36,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:36,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:36,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:36,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:36,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:36,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:36,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:36,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:02:36,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:36,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 00:02:36,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:36,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:36,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:36,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:02:36,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:02:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:36,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:36,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:36,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 00:02:36,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:36,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:36,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:36,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:02:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:36,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:36,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:02:36,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:36,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 00:02:36,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:02:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:36,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-27 00:02:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:37,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:37,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:37,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:02:37,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:37,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:02:37,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 00:02:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:37,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 879 [2020-10-27 00:02:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:37,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:37,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:37,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 00:02:37,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:37,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 00:02:37,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 00:02:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:37,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:37,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-27 00:02:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:37,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:37,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:37,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:02:37,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 723 proven. 441 refuted. 0 times theorem prover too weak. 2013 trivial. 0 not checked. [2020-10-27 00:02:38,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508237015] [2020-10-27 00:02:38,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:38,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:38,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204556129] [2020-10-27 00:02:38,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:38,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:38,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:38,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:38,610 INFO L87 Difference]: Start difference. First operand 20133 states and 21717 transitions. Second operand 7 states. [2020-10-27 00:02:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:42,786 INFO L93 Difference]: Finished difference Result 44652 states and 48275 transitions. [2020-10-27 00:02:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:02:42,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1239 [2020-10-27 00:02:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:42,848 INFO L225 Difference]: With dead ends: 44652 [2020-10-27 00:02:42,848 INFO L226 Difference]: Without dead ends: 25205 [2020-10-27 00:02:42,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:02:42,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25205 states. [2020-10-27 00:02:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25205 to 23520. [2020-10-27 00:02:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23520 states. [2020-10-27 00:02:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23520 states to 23520 states and 25434 transitions. [2020-10-27 00:02:43,268 INFO L78 Accepts]: Start accepts. Automaton has 23520 states and 25434 transitions. Word has length 1239 [2020-10-27 00:02:43,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:43,269 INFO L481 AbstractCegarLoop]: Abstraction has 23520 states and 25434 transitions. [2020-10-27 00:02:43,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:43,269 INFO L276 IsEmpty]: Start isEmpty. Operand 23520 states and 25434 transitions. [2020-10-27 00:02:43,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1285 [2020-10-27 00:02:43,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:43,309 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:43,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:02:43,309 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:43,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1770171888, now seen corresponding path program 1 times [2020-10-27 00:02:43,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:43,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673235939] [2020-10-27 00:02:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:43,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:49,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:49,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1310 [2020-10-27 00:02:49,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:02:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6034 [2020-10-27 00:02:49,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:02:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:02:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:49,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:49,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:49,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:49,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:49,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:02:49,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:49,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:50,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:50,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:02:50,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:50,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:02:50,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:02:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:50,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:02:50,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:02:50,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:50,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:02:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:50,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:50,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:02:50,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:50,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:02:50,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:50,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:50,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:50,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:50,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:02:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:50,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:50,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:02:50,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:50,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:50,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:02:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:50,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:02:50,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 00:02:50,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:50,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:50,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:02:50,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:50,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:02:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:50,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:02:50,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:02:50,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 00:02:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:50,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-27 00:02:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 00:02:51,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:02:51,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 00:02:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:51,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:51,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-27 00:02:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:51,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:51,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:51,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:02:51,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 956 proven. 162 refuted. 0 times theorem prover too weak. 2682 trivial. 0 not checked. [2020-10-27 00:02:52,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673235939] [2020-10-27 00:02:52,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:52,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:52,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28490754] [2020-10-27 00:02:52,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:52,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:52,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:52,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:52,294 INFO L87 Difference]: Start difference. First operand 23520 states and 25434 transitions. Second operand 7 states. [2020-10-27 00:02:58,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:58,202 INFO L93 Difference]: Finished difference Result 47371 states and 51284 transitions. [2020-10-27 00:02:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:02:58,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1284 [2020-10-27 00:02:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:58,260 INFO L225 Difference]: With dead ends: 47371 [2020-10-27 00:02:58,260 INFO L226 Difference]: Without dead ends: 24537 [2020-10-27 00:02:58,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24537 states. [2020-10-27 00:02:58,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24537 to 23859. [2020-10-27 00:02:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23859 states. [2020-10-27 00:02:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23859 states to 23859 states and 25795 transitions. [2020-10-27 00:02:58,669 INFO L78 Accepts]: Start accepts. Automaton has 23859 states and 25795 transitions. Word has length 1284 [2020-10-27 00:02:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:58,670 INFO L481 AbstractCegarLoop]: Abstraction has 23859 states and 25795 transitions. [2020-10-27 00:02:58,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 23859 states and 25795 transitions. [2020-10-27 00:02:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2020-10-27 00:02:58,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:58,707 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:58,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 00:02:58,708 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:58,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1915736196, now seen corresponding path program 1 times [2020-10-27 00:02:58,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:58,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418776204] [2020-10-27 00:02:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:59,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:04,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:04,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1370 [2020-10-27 00:03:04,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:03:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5230 [2020-10-27 00:03:04,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:03:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:03:04,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:04,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:04,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:04,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:04,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:04,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:04,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:04,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:04,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:04,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:04,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:04,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:04,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:04,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:03:04,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:04,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:04,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:04,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:04,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:04,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:04,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:04,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:04,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:04,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:03:04,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:04,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:04,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:04,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:04,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:03:04,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:04,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:03:04,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:04,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:04,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:04,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:04,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:03:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:04,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:04,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:04,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:04,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:03:04,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:04,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:04,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:04,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:04,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:03:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:04,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:05,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:05,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:03:05,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:05,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:03:05,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:03:05,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:05,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:03:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:05,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:05,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:03:05,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:05,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 00:03:05,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:03:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:05,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-27 00:03:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:05,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:05,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 00:03:05,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:03:05,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-27 00:03:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 1292 proven. 169 refuted. 0 times theorem prover too weak. 2013 trivial. 0 not checked. [2020-10-27 00:03:07,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418776204] [2020-10-27 00:03:07,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:07,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:07,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601028497] [2020-10-27 00:03:07,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:07,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:07,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:07,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:07,095 INFO L87 Difference]: Start difference. First operand 23859 states and 25795 transitions. Second operand 7 states. [2020-10-27 00:03:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:11,440 INFO L93 Difference]: Finished difference Result 47038 states and 50908 transitions. [2020-10-27 00:03:11,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:03:11,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1346 [2020-10-27 00:03:11,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:11,493 INFO L225 Difference]: With dead ends: 47038 [2020-10-27 00:03:11,493 INFO L226 Difference]: Without dead ends: 23865 [2020-10-27 00:03:11,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:03:11,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23865 states. [2020-10-27 00:03:11,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23865 to 23861. [2020-10-27 00:03:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23861 states. [2020-10-27 00:03:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23861 states to 23861 states and 25785 transitions. [2020-10-27 00:03:11,904 INFO L78 Accepts]: Start accepts. Automaton has 23861 states and 25785 transitions. Word has length 1346 [2020-10-27 00:03:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:11,906 INFO L481 AbstractCegarLoop]: Abstraction has 23861 states and 25785 transitions. [2020-10-27 00:03:11,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 23861 states and 25785 transitions. [2020-10-27 00:03:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1367 [2020-10-27 00:03:12,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:12,087 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:12,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 00:03:12,088 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:12,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:12,089 INFO L82 PathProgramCache]: Analyzing trace with hash 809999656, now seen corresponding path program 1 times [2020-10-27 00:03:12,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:12,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42052707] [2020-10-27 00:03:12,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:17,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:17,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1394 [2020-10-27 00:03:17,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:03:17,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-27 00:03:17,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:03:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-27 00:03:17,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:17,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:17,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:17,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:17,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:17,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:17,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:17,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:17,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:17,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:17,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:17,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:03:17,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:17,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:17,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:17,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:17,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:17,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:03:17,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:17,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:17,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:17,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:17,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:03:17,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:03:17,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:17,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:03:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:17,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:17,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:17,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:17,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:03:17,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:17,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:03:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:17,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:17,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:03:17,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:03:17,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:03:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:17,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:03:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:18,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 00:03:18,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:18,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-27 00:03:18,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-27 00:03:18,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:18,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 978 [2020-10-27 00:03:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:18,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:18,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:03:18,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:18,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:03:18,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:18,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:18,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:03:18,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:18,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:18,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1120 [2020-10-27 00:03:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:18,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:03:18,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:18,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:03:18,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:03:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:18,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1194 [2020-10-27 00:03:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:18,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:18,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:03:18,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4299 backedges. 1331 proven. 319 refuted. 0 times theorem prover too weak. 2649 trivial. 0 not checked. [2020-10-27 00:03:20,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42052707] [2020-10-27 00:03:20,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:20,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:20,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32198758] [2020-10-27 00:03:20,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:20,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:20,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:20,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:20,204 INFO L87 Difference]: Start difference. First operand 23861 states and 25785 transitions. Second operand 7 states. [2020-10-27 00:03:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:25,206 INFO L93 Difference]: Finished difference Result 47720 states and 51645 transitions. [2020-10-27 00:03:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:25,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1366 [2020-10-27 00:03:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:25,261 INFO L225 Difference]: With dead ends: 47720 [2020-10-27 00:03:25,261 INFO L226 Difference]: Without dead ends: 24545 [2020-10-27 00:03:25,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:25,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24545 states. [2020-10-27 00:03:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24545 to 24198. [2020-10-27 00:03:25,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24198 states. [2020-10-27 00:03:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24198 states to 24198 states and 26072 transitions. [2020-10-27 00:03:25,663 INFO L78 Accepts]: Start accepts. Automaton has 24198 states and 26072 transitions. Word has length 1366 [2020-10-27 00:03:25,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:25,665 INFO L481 AbstractCegarLoop]: Abstraction has 24198 states and 26072 transitions. [2020-10-27 00:03:25,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:25,665 INFO L276 IsEmpty]: Start isEmpty. Operand 24198 states and 26072 transitions. [2020-10-27 00:03:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1434 [2020-10-27 00:03:25,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:25,700 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:25,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 00:03:25,700 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:25,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:25,701 INFO L82 PathProgramCache]: Analyzing trace with hash 939796634, now seen corresponding path program 1 times [2020-10-27 00:03:25,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:25,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187267331] [2020-10-27 00:03:25,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:29,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:30,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:30,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1457 [2020-10-27 00:03:30,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:30,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 00:03:30,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 938 [2020-10-27 00:03:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:03:30,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:31,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:31,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:31,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:31,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:31,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:31,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:03:31,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:03:31,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:03:31,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:03:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 00:03:31,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:03:31,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:31,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:31,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-27 00:03:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 00:03:31,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-27 00:03:31,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:31,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-27 00:03:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:03:31,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:03:31,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 00:03:31,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2020-10-27 00:03:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:32,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:32,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:03:32,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-27 00:03:32,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:03:32,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:32,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1201 [2020-10-27 00:03:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:32,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:32,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 00:03:32,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:32,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:03:32,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-27 00:03:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:32,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3886 backedges. 1379 proven. 169 refuted. 0 times theorem prover too weak. 2338 trivial. 0 not checked. [2020-10-27 00:03:34,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187267331] [2020-10-27 00:03:34,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:34,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:34,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143295939] [2020-10-27 00:03:34,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:34,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:34,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:34,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:34,450 INFO L87 Difference]: Start difference. First operand 24198 states and 26072 transitions. Second operand 7 states.