/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/bor4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:39:25,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:39:25,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:39:25,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:39:25,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:39:25,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:39:25,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:39:25,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:39:25,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:39:25,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:39:25,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:39:25,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:39:25,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:39:25,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:39:25,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:39:25,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:39:25,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:39:25,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:39:25,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:39:25,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:39:25,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:39:25,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:39:25,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:39:25,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:39:25,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:39:25,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:39:25,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:39:25,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:39:25,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:39:25,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:39:25,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:39:25,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:39:25,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:39:25,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:39:25,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:39:25,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:39:25,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:39:25,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:39:25,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:39:25,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:39:25,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:39:25,758 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 [2020-10-28 08:39:25,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:39:25,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:39:25,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:39:25,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:39:25,817 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:39:25,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:39:25,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:39:25,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:39:25,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:39:25,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:39:25,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:39:25,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:39:25,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:39:25,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:39:25,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:39:25,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:39:25,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:39:25,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:39:25,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:39:25,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:39:25,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:39:25,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:39:25,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:39:25,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:39:25,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:39:25,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:39:25,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:39:25,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:39:25,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:39:25,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:39:26,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:39:26,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:39:26,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:39:26,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:39:26,277 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:39:26,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor4.i [2020-10-28 08:39:26,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0519a43d9/c368af9edba742d785746c8739f0a3d0/FLAG7ecec16b9 [2020-10-28 08:39:27,018 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:39:27,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor4.i [2020-10-28 08:39:27,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0519a43d9/c368af9edba742d785746c8739f0a3d0/FLAG7ecec16b9 [2020-10-28 08:39:27,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0519a43d9/c368af9edba742d785746c8739f0a3d0 [2020-10-28 08:39:27,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:39:27,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:39:27,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:39:27,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:39:27,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:39:27,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:27" (1/1) ... [2020-10-28 08:39:27,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c42828b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27, skipping insertion in model container [2020-10-28 08:39:27,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:27" (1/1) ... [2020-10-28 08:39:27,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:39:27,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:39:27,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:39:27,641 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:39:27,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:39:27,693 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:39:27,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27 WrapperNode [2020-10-28 08:39:27,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:39:27,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:39:27,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:39:27,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:39:27,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27" (1/1) ... [2020-10-28 08:39:27,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27" (1/1) ... [2020-10-28 08:39:27,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27" (1/1) ... [2020-10-28 08:39:27,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27" (1/1) ... [2020-10-28 08:39:27,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27" (1/1) ... [2020-10-28 08:39:27,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27" (1/1) ... [2020-10-28 08:39:27,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27" (1/1) ... [2020-10-28 08:39:27,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:39:27,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:39:27,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:39:27,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:39:27,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:39:27,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:39:27,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:39:27,902 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:39:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-28 08:39:27,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:39:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:39:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:39:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 08:39:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 08:39:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:39:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:39:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:39:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-28 08:39:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:39:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:39:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:39:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:39:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:39:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:39:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:39:28,415 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:39:28,416 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 08:39:28,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:28 BoogieIcfgContainer [2020-10-28 08:39:28,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:39:28,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:39:28,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:39:28,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:39:28,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:39:27" (1/3) ... [2020-10-28 08:39:28,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bc1f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:28, skipping insertion in model container [2020-10-28 08:39:28,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:27" (2/3) ... [2020-10-28 08:39:28,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bc1f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:28, skipping insertion in model container [2020-10-28 08:39:28,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:28" (3/3) ... [2020-10-28 08:39:28,428 INFO L111 eAbstractionObserver]: Analyzing ICFG bor4.i [2020-10-28 08:39:28,442 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:39:28,447 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:39:28,463 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:39:28,494 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:39:28,495 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:39:28,495 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:39:28,495 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:39:28,495 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:39:28,495 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:39:28,495 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:39:28,495 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:39:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-28 08:39:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:39:28,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:28,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:28,524 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:28,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-28 08:39:28,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:28,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888636864] [2020-10-28 08:39:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:29,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:39:29,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-28 08:39:29,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:29,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 08:39:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:39:29,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:29,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:29,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:39:29,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:29,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:29,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:29,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:29,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:29,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:29,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:29,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:39:29,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:29,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:39:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:29,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:39:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:29,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:29,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:29,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 08:39:29,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:29,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:29,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:39:29,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:29,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 08:39:29,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:39:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:29,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:29,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 08:39:29,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:29,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:29,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:39:29,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888636864] [2020-10-28 08:39:29,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:29,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-28 08:39:29,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989365611] [2020-10-28 08:39:29,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:39:29,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:29,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:39:29,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:39:29,651 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-28 08:39:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:29,782 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-28 08:39:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:39:29,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 08:39:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:29,793 INFO L225 Difference]: With dead ends: 60 [2020-10-28 08:39:29,793 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 08:39:29,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:39:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 08:39:29,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 08:39:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 08:39:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 08:39:29,848 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-28 08:39:29,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:29,848 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 08:39:29,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:39:29,849 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 08:39:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:39:29,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:29,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:29,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:39:29,852 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:29,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1640105647, now seen corresponding path program 1 times [2020-10-28 08:39:29,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:29,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009375194] [2020-10-28 08:39:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:29,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:31,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:39:31,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:31,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-10-28 08:39:31,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:31,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 08:39:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:31,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:31,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:31,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:39:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:31,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:31,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 08:39:31,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:31,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:31,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:31,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:39:31,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:31,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:31,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:39:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:31,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:31,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 08:39:31,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:31,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:31,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:39:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:31,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:31,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:31,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 08:39:31,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:31,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:31,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:31,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:31,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 08:39:31,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009375194] [2020-10-28 08:39:31,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:31,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-28 08:39:31,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984105050] [2020-10-28 08:39:31,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:31,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:31,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:31,456 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-28 08:39:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:31,705 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-28 08:39:31,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:31,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 08:39:31,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:31,707 INFO L225 Difference]: With dead ends: 49 [2020-10-28 08:39:31,707 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 08:39:31,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 08:39:31,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-28 08:39:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 08:39:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-28 08:39:31,728 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-28 08:39:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:31,728 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-28 08:39:31,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-28 08:39:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 08:39:31,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:31,735 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:31,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:39:31,738 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:31,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1866427439, now seen corresponding path program 1 times [2020-10-28 08:39:31,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:31,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036868522] [2020-10-28 08:39:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 08:39:35,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3547 [2020-10-28 08:39:35,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:39:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:35,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:35,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:39:35,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:35,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:35,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:35,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:35,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 08:39:35,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 08:39:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:35,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:35,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 08:39:35,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:35,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:35,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:39:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:39:35,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 08:39:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 08:39:35,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036868522] [2020-10-28 08:39:35,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:35,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:35,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864737835] [2020-10-28 08:39:35,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:35,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:35,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:35,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:35,498 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-28 08:39:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:35,766 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-28 08:39:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:35,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-28 08:39:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:35,768 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:39:35,768 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 08:39:35,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:39:35,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 08:39:35,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 08:39:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 08:39:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 08:39:35,777 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 40 [2020-10-28 08:39:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:35,777 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 08:39:35,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 08:39:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 08:39:35,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:35,779 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:35,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:39:35,780 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:35,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:35,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1194393741, now seen corresponding path program 2 times [2020-10-28 08:39:35,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:35,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740411265] [2020-10-28 08:39:35,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:40,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:40,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 08:39:40,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:39:40,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:40,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:40,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:40,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:40,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:40,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:40,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:40,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:40,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:40,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:40,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:40,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:40,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:40,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:39:40,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:40,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 08:39:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:40,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:40,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:40,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 08:39:40,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:40,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:40,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:39:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:40,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:40,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:40,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:40,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:40,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:39:40,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:40,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-28 08:39:40,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740411265] [2020-10-28 08:39:40,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:40,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:40,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420307707] [2020-10-28 08:39:40,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:40,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:40,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:40,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:40,968 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-10-28 08:39:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:41,095 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-28 08:39:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:41,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-28 08:39:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:41,098 INFO L225 Difference]: With dead ends: 56 [2020-10-28 08:39:41,098 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 08:39:41,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 08:39:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 08:39:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 08:39:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 08:39:41,112 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 46 [2020-10-28 08:39:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:41,112 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 08:39:41,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 08:39:41,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 08:39:41,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:41,117 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:41,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:39:41,118 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:41,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:41,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1143390993, now seen corresponding path program 1 times [2020-10-28 08:39:41,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:41,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881066221] [2020-10-28 08:39:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:46,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 08:39:46,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:39:46,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:46,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:39:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:46,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:46,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:46,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:39:46,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:46,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:46,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:46,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:46,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 08:39:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:46,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:46,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:46,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:46,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:39:46,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:46,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:39:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:46,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:46,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:46,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:39:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:46,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:39:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:46,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:46,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:39:46,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:46,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-28 08:39:46,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881066221] [2020-10-28 08:39:46,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:46,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:46,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507269976] [2020-10-28 08:39:46,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:46,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:46,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:46,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:46,312 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-28 08:39:46,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:46,436 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2020-10-28 08:39:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:46,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-28 08:39:46,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:46,437 INFO L225 Difference]: With dead ends: 58 [2020-10-28 08:39:46,437 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 08:39:46,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 08:39:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 08:39:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 08:39:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-28 08:39:46,445 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 48 [2020-10-28 08:39:46,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:46,446 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-28 08:39:46,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-28 08:39:46,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 08:39:46,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:46,448 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:46,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:39:46,448 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:46,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:46,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1486624559, now seen corresponding path program 2 times [2020-10-28 08:39:46,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:46,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754146000] [2020-10-28 08:39:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:46,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:51,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 08:39:51,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:39:51,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:51,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 08:39:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:51,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:51,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:51,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:39:51,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:51,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:51,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:51,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:51,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:51,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:51,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:51,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:39:51,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:51,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:51,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:39:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:51,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:51,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:51,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:51,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:51,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:39:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:51,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:51,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 08:39:51,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:51,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-28 08:39:51,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754146000] [2020-10-28 08:39:51,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:51,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:51,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846734698] [2020-10-28 08:39:51,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:51,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:51,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:51,639 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-28 08:39:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:51,738 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-28 08:39:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:51,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 08:39:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:51,740 INFO L225 Difference]: With dead ends: 53 [2020-10-28 08:39:51,740 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 08:39:51,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:51,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 08:39:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-28 08:39:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 08:39:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 08:39:51,747 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-28 08:39:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:51,749 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 08:39:51,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 08:39:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 08:39:51,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:51,751 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 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] [2020-10-28 08:39:51,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:39:51,752 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:51,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1352891471, now seen corresponding path program 1 times [2020-10-28 08:39:51,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:51,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380506741] [2020-10-28 08:39:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:51,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:56,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 08:39:56,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:56,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:39:56,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:56,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:39:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:56,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:56,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:56,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:56,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:56,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:56,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:39:56,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:56,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:56,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:56,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:56,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:56,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:56,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 08:39:56,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:56,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:56,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:56,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:39:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:56,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:56,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:56,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:56,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:39:56,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:56,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:56,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:56,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:39:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:56,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:56,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:56,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:39:56,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:56,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-28 08:39:56,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380506741] [2020-10-28 08:39:56,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:56,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:39:56,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791516231] [2020-10-28 08:39:56,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:39:56,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:56,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:39:56,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:39:56,945 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-28 08:39:57,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:57,061 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-28 08:39:57,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:39:57,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-28 08:39:57,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:57,063 INFO L225 Difference]: With dead ends: 62 [2020-10-28 08:39:57,063 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 08:39:57,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:39:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 08:39:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 08:39:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 08:39:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 08:39:57,070 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-28 08:39:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:57,070 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 08:39:57,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:39:57,070 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 08:39:57,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 08:39:57,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:57,072 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:57,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:39:57,072 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:57,073 INFO L82 PathProgramCache]: Analyzing trace with hash -581867727, now seen corresponding path program 2 times [2020-10-28 08:39:57,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:57,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822721991] [2020-10-28 08:39:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:57,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:57,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:02,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 08:40:02,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:40:02,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:02,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 08:40:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:02,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:02,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:02,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:02,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:02,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:02,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:02,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:02,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:02,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:02,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:40:02,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:02,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:02,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:02,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 08:40:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:02,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:02,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:02,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:02,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:40:02,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:02,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:02,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:40:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:02,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:02,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:02,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:40:02,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:02,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-28 08:40:02,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822721991] [2020-10-28 08:40:02,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:02,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:02,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906718889] [2020-10-28 08:40:02,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:02,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:02,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:02,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:02,253 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-28 08:40:02,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:02,479 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-28 08:40:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:02,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-28 08:40:02,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:02,481 INFO L225 Difference]: With dead ends: 63 [2020-10-28 08:40:02,481 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 08:40:02,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:02,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 08:40:02,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 08:40:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 08:40:02,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-28 08:40:02,488 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2020-10-28 08:40:02,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:02,488 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-28 08:40:02,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-28 08:40:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 08:40:02,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:02,490 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:02,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:40:02,490 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:02,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:02,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1202302705, now seen corresponding path program 3 times [2020-10-28 08:40:02,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:02,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638881546] [2020-10-28 08:40:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:02,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:03,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:07,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 08:40:07,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:40:07,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:07,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:40:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 08:40:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:40:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:07,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:07,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:07,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:07,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:07,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:07,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:07,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:40:07,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:07,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:07,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 08:40:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:07,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:07,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:07,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:07,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:40:07,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:07,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:40:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:07,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:07,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:07,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:07,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 08:40:07,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:07,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-28 08:40:07,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638881546] [2020-10-28 08:40:07,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:07,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:40:07,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693962052] [2020-10-28 08:40:07,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:40:07,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:07,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:40:07,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:40:07,666 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-10-28 08:40:07,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:07,769 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 08:40:07,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:40:07,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-28 08:40:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:07,771 INFO L225 Difference]: With dead ends: 61 [2020-10-28 08:40:07,771 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 08:40:07,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:40:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 08:40:07,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-28 08:40:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 08:40:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-28 08:40:07,776 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-28 08:40:07,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:07,776 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-28 08:40:07,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:40:07,777 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-28 08:40:07,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 08:40:07,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:07,778 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:07,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:40:07,778 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:07,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:07,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1065768205, now seen corresponding path program 4 times [2020-10-28 08:40:07,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:07,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132585982] [2020-10-28 08:40:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:07,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:12,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 08:40:12,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:12,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:40:12,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:12,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:12,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 08:40:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:12,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:12,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:12,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:40:12,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:12,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:12,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:12,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 08:40:12,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:12,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:12,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:12,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:12,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 08:40:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:12,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:12,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:12,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:12,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:40:12,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:12,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:12,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:12,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:40:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:12,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:12,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:12,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:40:12,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:12,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:12,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:12,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 56 proven. 9 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-28 08:40:12,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132585982] [2020-10-28 08:40:12,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:12,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:40:12,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731963688] [2020-10-28 08:40:12,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:40:12,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:40:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:12,975 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-28 08:40:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:13,202 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-28 08:40:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:40:13,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-28 08:40:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:13,203 INFO L225 Difference]: With dead ends: 71 [2020-10-28 08:40:13,204 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 08:40:13,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:40:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 08:40:13,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 08:40:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 08:40:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-28 08:40:13,217 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-28 08:40:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:13,217 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-28 08:40:13,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:40:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-28 08:40:13,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 08:40:13,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:13,219 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:13,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:40:13,220 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:13,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:13,220 INFO L82 PathProgramCache]: Analyzing trace with hash 54216939, now seen corresponding path program 5 times [2020-10-28 08:40:13,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:13,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032546310] [2020-10-28 08:40:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:13,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:13,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:13,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:18,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 08:40:18,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:18,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:40:18,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:18,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 08:40:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:18,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:18,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:18,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:18,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:18,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:18,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:18,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:18,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:18,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:18,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:18,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:18,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:18,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:18,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:18,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:40:18,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:18,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:40:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:18,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:18,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:18,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:40:18,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:18,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:18,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:40:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:18,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:18,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 08:40:18,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:18,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 08:40:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 08:40:18,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032546310] [2020-10-28 08:40:18,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:18,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:40:18,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15700318] [2020-10-28 08:40:18,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:40:18,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:18,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:40:18,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:18,412 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-10-28 08:40:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:18,684 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-28 08:40:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:40:18,684 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-28 08:40:18,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:18,685 INFO L225 Difference]: With dead ends: 75 [2020-10-28 08:40:18,685 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 08:40:18,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:40:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 08:40:18,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 08:40:18,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 08:40:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-28 08:40:18,692 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-28 08:40:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:18,692 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-28 08:40:18,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:40:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-28 08:40:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 08:40:18,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:18,693 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:18,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:40:18,694 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:18,694 INFO L82 PathProgramCache]: Analyzing trace with hash -861790647, now seen corresponding path program 6 times [2020-10-28 08:40:18,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:18,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161673066] [2020-10-28 08:40:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:18,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:23,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 08:40:23,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:40:23,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:23,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:23,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:23,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:23,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:23,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:23,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:23,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:23,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:23,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:23,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:40:23,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:23,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:23,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:23,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:23,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:23,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:40:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:23,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:23,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:23,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:23,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:40:23,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:23,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:23,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:23,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:23,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:40:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:23,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:23,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:23,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:40:23,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:23,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 08:40:23,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161673066] [2020-10-28 08:40:23,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:23,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:40:23,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482877061] [2020-10-28 08:40:23,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:40:23,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:23,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:40:23,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:23,890 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-28 08:40:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:24,002 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-28 08:40:24,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:40:24,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-28 08:40:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:24,003 INFO L225 Difference]: With dead ends: 80 [2020-10-28 08:40:24,003 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 08:40:24,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 08:40:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 08:40:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 08:40:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-28 08:40:24,015 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 74 [2020-10-28 08:40:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:24,015 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-28 08:40:24,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:40:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-28 08:40:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 08:40:24,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:24,016 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:24,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:40:24,022 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:24,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:24,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1083321429, now seen corresponding path program 7 times [2020-10-28 08:40:24,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:24,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090522615] [2020-10-28 08:40:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:24,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:29,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:40:29,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:29,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:40:29,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:29,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:29,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:29,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:29,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:29,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:29,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:29,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:29,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:29,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:29,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:29,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:29,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:29,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 08:40:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:29,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:29,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:29,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:40:29,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:29,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:29,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 08:40:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:29,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:29,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:40:29,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:29,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:29,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:40:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:29,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:29,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:40:29,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:29,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:29,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 08:40:29,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090522615] [2020-10-28 08:40:29,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:29,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:40:29,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525362769] [2020-10-28 08:40:29,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:40:29,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:29,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:40:29,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:29,233 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-28 08:40:29,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:29,339 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-28 08:40:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:40:29,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-28 08:40:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:29,340 INFO L225 Difference]: With dead ends: 82 [2020-10-28 08:40:29,340 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 08:40:29,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:29,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 08:40:29,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 08:40:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 08:40:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 08:40:29,357 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-28 08:40:29,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:29,357 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 08:40:29,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:40:29,357 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 08:40:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 08:40:29,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:29,361 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:29,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:40:29,362 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:29,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:29,362 INFO L82 PathProgramCache]: Analyzing trace with hash 773961869, now seen corresponding path program 8 times [2020-10-28 08:40:29,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:29,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841176051] [2020-10-28 08:40:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:29,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:34,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 08:40:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 08:40:34,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:34,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 08:40:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:34,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:34,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:34,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:34,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:34,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:34,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:34,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:34,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:34,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:40:34,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:34,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:34,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:34,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:40:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:34,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:34,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:34,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:34,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:40:34,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:34,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:34,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:34,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:40:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:34,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:34,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:34,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:40:34,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:34,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 08:40:34,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841176051] [2020-10-28 08:40:34,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:34,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:34,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987041902] [2020-10-28 08:40:34,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:34,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:34,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:34,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:34,564 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-10-28 08:40:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:34,667 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-28 08:40:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:34,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-28 08:40:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:34,669 INFO L225 Difference]: With dead ends: 75 [2020-10-28 08:40:34,669 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 08:40:34,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 08:40:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-28 08:40:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 08:40:34,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 08:40:34,677 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-28 08:40:34,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:34,677 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 08:40:34,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:34,678 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 08:40:34,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 08:40:34,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:34,679 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:34,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:40:34,679 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:34,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:34,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1570956555, now seen corresponding path program 9 times [2020-10-28 08:40:34,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:34,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990324667] [2020-10-28 08:40:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:34,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:39,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 08:40:39,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:39,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:40:39,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:39,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 08:40:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:39,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:39,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:39,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:39,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:39,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:39,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:40:39,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:39,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:39,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:39,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:39,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:39,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:39,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:39,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:39,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:40:39,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:39,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:39,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:39,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:40:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:39,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:39,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:39,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:40:39,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:39,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:39,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:40:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:39,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:39,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 08:40:39,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:39,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-28 08:40:39,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990324667] [2020-10-28 08:40:39,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:39,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:40:39,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012955261] [2020-10-28 08:40:39,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:40:39,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:39,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:40:39,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:39,938 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-28 08:40:40,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:40,298 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-28 08:40:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:40:40,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-28 08:40:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:40,300 INFO L225 Difference]: With dead ends: 87 [2020-10-28 08:40:40,300 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 08:40:40,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:40:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 08:40:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-28 08:40:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 08:40:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-28 08:40:40,312 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-28 08:40:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:40,312 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-28 08:40:40,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:40:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-28 08:40:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 08:40:40,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:40,313 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:40,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:40:40,313 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:40,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:40,314 INFO L82 PathProgramCache]: Analyzing trace with hash -2099887767, now seen corresponding path program 10 times [2020-10-28 08:40:40,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:40,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624997180] [2020-10-28 08:40:40,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:40,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:40,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:45,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 08:40:45,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:45,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:40:45,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:45,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:45,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:45,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 08:40:45,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:45,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:45,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:45,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:45,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:45,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:45,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:45,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:45,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:45,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:45,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:45,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:40:45,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:45,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:45,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:45,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:40:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:45,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:45,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 08:40:45,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:45,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:40:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:45,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:40:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:45,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:45,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:45,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:45,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 08:40:45,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:45,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:40:45,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-28 08:40:45,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624997180] [2020-10-28 08:40:45,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:45,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:40:45,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092431779] [2020-10-28 08:40:45,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:40:45,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:45,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:40:45,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:40:45,579 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 10 states. [2020-10-28 08:40:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:45,919 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-28 08:40:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:40:45,920 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-28 08:40:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:45,921 INFO L225 Difference]: With dead ends: 91 [2020-10-28 08:40:45,921 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 08:40:45,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:40:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 08:40:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 08:40:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 08:40:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-28 08:40:45,940 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-28 08:40:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:45,940 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-28 08:40:45,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:40:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-28 08:40:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 08:40:45,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:45,942 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:45,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:40:45,942 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:45,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:45,943 INFO L82 PathProgramCache]: Analyzing trace with hash -773972153, now seen corresponding path program 11 times [2020-10-28 08:40:45,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:45,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172940765] [2020-10-28 08:40:45,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:45,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:46,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:50,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:50,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 08:40:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:40:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:50,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:51,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:51,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:51,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:51,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:51,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:51,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:51,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:51,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:40:51,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:51,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:51,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:51,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:40:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:51,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:51,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:51,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:40:51,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:51,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:51,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:40:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:51,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:51,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:40:51,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:51,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 08:40:51,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172940765] [2020-10-28 08:40:51,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:51,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:40:51,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705818306] [2020-10-28 08:40:51,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:40:51,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:40:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:51,178 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-28 08:40:51,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:51,325 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-28 08:40:51,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:40:51,325 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-28 08:40:51,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:51,327 INFO L225 Difference]: With dead ends: 96 [2020-10-28 08:40:51,327 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 08:40:51,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 08:40:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 08:40:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 08:40:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-28 08:40:51,338 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 92 [2020-10-28 08:40:51,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:51,338 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-28 08:40:51,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:40:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-28 08:40:51,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 08:40:51,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:51,340 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:51,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:40:51,340 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:51,340 INFO L82 PathProgramCache]: Analyzing trace with hash -96468951, now seen corresponding path program 12 times [2020-10-28 08:40:51,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:51,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614926374] [2020-10-28 08:40:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:51,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:56,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 08:40:56,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:56,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:40:56,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:56,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:56,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:56,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:56,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:56,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:56,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:56,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:56,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:40:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:56,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:56,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:40:56,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:56,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:56,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:56,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:40:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:56,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:56,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:56,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 08:40:56,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:56,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:40:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:56,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:56,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:40:56,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:56,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:56,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 08:40:56,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614926374] [2020-10-28 08:40:56,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:56,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:40:56,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429279292] [2020-10-28 08:40:56,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:40:56,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:56,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:40:56,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:40:56,579 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-28 08:40:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:56,741 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-28 08:40:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:40:56,742 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-28 08:40:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:56,743 INFO L225 Difference]: With dead ends: 98 [2020-10-28 08:40:56,743 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 08:40:56,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:40:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 08:40:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 08:40:56,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 08:40:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-28 08:40:56,750 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-28 08:40:56,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:56,751 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-28 08:40:56,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:40:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-28 08:40:56,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 08:40:56,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:56,752 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:56,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:40:56,752 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:56,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:56,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1850920821, now seen corresponding path program 13 times [2020-10-28 08:40:56,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:56,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032300960] [2020-10-28 08:40:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:56,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:01,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:01,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 08:41:01,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:01,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:41:01,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:01,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:41:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 08:41:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:41:01,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:01,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:01,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:01,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:01,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:01,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:01,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:01,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:01,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:01,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:01,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:01,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:01,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:01,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:01,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:01,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:41:01,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:01,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:01,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:01,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:01,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:01,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:01,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:41:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:01,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:01,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:01,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:01,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:01,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 08:41:01,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:01,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:41:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:01,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:01,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:01,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:01,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:01,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:41:01,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:01,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-28 08:41:01,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032300960] [2020-10-28 08:41:01,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:01,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:41:01,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045638326] [2020-10-28 08:41:01,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:41:01,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:01,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:41:01,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:41:01,937 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-10-28 08:41:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:02,055 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-28 08:41:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:41:02,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 08:41:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:02,057 INFO L225 Difference]: With dead ends: 89 [2020-10-28 08:41:02,057 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 08:41:02,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:41:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 08:41:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 08:41:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 08:41:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-28 08:41:02,064 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-28 08:41:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:02,064 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-28 08:41:02,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:41:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-28 08:41:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 08:41:02,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:02,066 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:02,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:41:02,066 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:02,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1286956425, now seen corresponding path program 14 times [2020-10-28 08:41:02,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:02,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864812400] [2020-10-28 08:41:02,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:07,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 08:41:07,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:07,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:41:07,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:07,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:07,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:07,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 08:41:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:07,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:07,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:07,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:07,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:07,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:07,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:07,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:07,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:07,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:07,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:07,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:41:07,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:07,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:07,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:07,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:07,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:07,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:41:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:07,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:07,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:07,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:41:07,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:07,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:07,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 08:41:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:07,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:07,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:07,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:07,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:41:07,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:07,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:07,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:07,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:07,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:07,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-28 08:41:07,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864812400] [2020-10-28 08:41:07,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:07,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:41:07,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017689873] [2020-10-28 08:41:07,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:41:07,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:07,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:41:07,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:07,307 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-28 08:41:07,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:07,721 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-10-28 08:41:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:41:07,722 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-28 08:41:07,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:07,723 INFO L225 Difference]: With dead ends: 103 [2020-10-28 08:41:07,723 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 08:41:07,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:41:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 08:41:07,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-28 08:41:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 08:41:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-28 08:41:07,729 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-28 08:41:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:07,730 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-28 08:41:07,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:41:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-28 08:41:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 08:41:07,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:07,731 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:07,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:41:07,732 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:07,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:07,732 INFO L82 PathProgramCache]: Analyzing trace with hash 375589479, now seen corresponding path program 15 times [2020-10-28 08:41:07,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:07,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814997617] [2020-10-28 08:41:07,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:12,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:12,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 08:41:12,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:41:12,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:12,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:12,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:12,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:12,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:12,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:12,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:41:12,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:12,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:12,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:12,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:12,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:12,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:12,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:12,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:41:12,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:12,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:12,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:12,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:41:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:12,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:12,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:12,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:12,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:12,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 08:41:12,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:12,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:12,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:41:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:12,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:12,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:12,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:12,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:41:12,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:12,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:12,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2020-10-28 08:41:12,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814997617] [2020-10-28 08:41:12,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:12,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:41:12,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99543740] [2020-10-28 08:41:12,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:41:12,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:12,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:41:12,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:12,991 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-28 08:41:13,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:13,171 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-28 08:41:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:41:13,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-28 08:41:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:13,172 INFO L225 Difference]: With dead ends: 108 [2020-10-28 08:41:13,172 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 08:41:13,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 08:41:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-28 08:41:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 08:41:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-28 08:41:13,179 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-28 08:41:13,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:13,179 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-28 08:41:13,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:41:13,179 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-28 08:41:13,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 08:41:13,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:13,181 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:13,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 08:41:13,181 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:13,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:13,182 INFO L82 PathProgramCache]: Analyzing trace with hash -358569911, now seen corresponding path program 16 times [2020-10-28 08:41:13,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:13,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068431962] [2020-10-28 08:41:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:18,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 08:41:18,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:41:18,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:18,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:41:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 08:41:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:41:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:18,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:18,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:18,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:18,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:18,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:18,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:18,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:18,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:18,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:18,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:41:18,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:18,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:18,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:18,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:41:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:18,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:18,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:18,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:18,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:41:18,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:18,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:18,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:18,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:18,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:18,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:18,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:41:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:18,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:18,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:18,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:41:18,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:18,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-28 08:41:18,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068431962] [2020-10-28 08:41:18,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:18,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:41:18,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882750355] [2020-10-28 08:41:18,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:41:18,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:18,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:41:18,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:41:18,380 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 8 states. [2020-10-28 08:41:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:18,515 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-28 08:41:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:41:18,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 08:41:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:18,518 INFO L225 Difference]: With dead ends: 97 [2020-10-28 08:41:18,518 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 08:41:18,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:41:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 08:41:18,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-28 08:41:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 08:41:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-28 08:41:18,525 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-28 08:41:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:18,525 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-28 08:41:18,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:41:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-28 08:41:18,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 08:41:18,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:18,527 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:18,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 08:41:18,527 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:18,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:18,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1219924537, now seen corresponding path program 17 times [2020-10-28 08:41:18,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:18,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162169000] [2020-10-28 08:41:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:23,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:23,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 08:41:23,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:23,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 08:41:23,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:23,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:23,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:23,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:23,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:23,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:23,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:23,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:23,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:41:23,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:23,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:23,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:23,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:23,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:23,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:23,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:23,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:23,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:23,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:23,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:23,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 08:41:23,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:23,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:23,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:23,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:23,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:23,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:23,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:41:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:23,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:23,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:23,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:23,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:41:23,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:23,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:23,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:23,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:23,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 08:41:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:23,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:23,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:23,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:23,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:23,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:41:23,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:23,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:23,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:23,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:23,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:23,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-28 08:41:23,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162169000] [2020-10-28 08:41:23,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:23,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:41:23,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615532934] [2020-10-28 08:41:23,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:41:23,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:23,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:41:23,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:23,808 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-28 08:41:23,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:23,988 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-10-28 08:41:23,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:41:23,989 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-28 08:41:23,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:23,990 INFO L225 Difference]: With dead ends: 114 [2020-10-28 08:41:23,990 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 08:41:23,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:23,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 08:41:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-28 08:41:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 08:41:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-28 08:41:24,006 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-28 08:41:24,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:24,006 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-28 08:41:24,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:41:24,007 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-28 08:41:24,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 08:41:24,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:24,008 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:24,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 08:41:24,008 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:24,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:24,009 INFO L82 PathProgramCache]: Analyzing trace with hash -706655575, now seen corresponding path program 18 times [2020-10-28 08:41:24,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:24,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199596362] [2020-10-28 08:41:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:24,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:29,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 08:41:29,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:41:29,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:29,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:29,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:29,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:29,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:29,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:29,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:29,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:29,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:29,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:41:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:29,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:29,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:29,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 08:41:29,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:29,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:29,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:29,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:29,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:29,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:29,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:41:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:29,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:29,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:41:29,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:29,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:29,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:29,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 08:41:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:29,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:29,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:29,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:41:29,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:29,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:29,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-28 08:41:29,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199596362] [2020-10-28 08:41:29,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:29,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:41:29,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177862187] [2020-10-28 08:41:29,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:41:29,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:29,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:41:29,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:29,338 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-28 08:41:29,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:29,524 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-28 08:41:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:41:29,524 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-28 08:41:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:29,525 INFO L225 Difference]: With dead ends: 116 [2020-10-28 08:41:29,525 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 08:41:29,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 08:41:29,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 08:41:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 08:41:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-28 08:41:29,537 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-28 08:41:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:29,537 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-28 08:41:29,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:41:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-28 08:41:29,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 08:41:29,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:29,539 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:29,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 08:41:29,540 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:29,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:29,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1376422133, now seen corresponding path program 19 times [2020-10-28 08:41:29,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:29,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397470816] [2020-10-28 08:41:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:34,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:34,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 08:41:34,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:34,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 08:41:34,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:34,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:34,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-28 08:41:34,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:34,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:34,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:34,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:34,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:34,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:34,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:34,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:34,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:34,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:41:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:34,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:34,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:34,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:41:34,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:34,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:34,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:41:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:34,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:34,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:34,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:34,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:41:34,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:34,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:41:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:34,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:34,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:34,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:34,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:34,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:34,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:41:34,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:34,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:34,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:34,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 148 proven. 212 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2020-10-28 08:41:34,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397470816] [2020-10-28 08:41:34,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:34,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:41:34,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046146018] [2020-10-28 08:41:34,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:41:34,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:34,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:41:34,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:34,833 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-28 08:41:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:35,253 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-28 08:41:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:41:35,254 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-28 08:41:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:35,255 INFO L225 Difference]: With dead ends: 117 [2020-10-28 08:41:35,255 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 08:41:35,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:41:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 08:41:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 08:41:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 08:41:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-28 08:41:35,261 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-28 08:41:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:35,262 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-28 08:41:35,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:41:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-28 08:41:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 08:41:35,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:35,263 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:35,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 08:41:35,263 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:35,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:35,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1906413929, now seen corresponding path program 20 times [2020-10-28 08:41:35,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:35,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189870578] [2020-10-28 08:41:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:35,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:40,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:40,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 08:41:40,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:40,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:41:40,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:40,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:40,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:40,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 08:41:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:40,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:40,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:40,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:40,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:40,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:40,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:40,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:40,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:40,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:40,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:41:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:40,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:40,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:40,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:40,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:40,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 08:41:40,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:40,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:40,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:40,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:40,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:40,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:40,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 08:41:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:40,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:40,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:40,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:40,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 08:41:40,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:40,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:40,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:40,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:40,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:40,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 08:41:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:40,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:40,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 08:41:40,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:40,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:41:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2020-10-28 08:41:40,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189870578] [2020-10-28 08:41:40,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:40,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:41:40,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389490558] [2020-10-28 08:41:40,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:41:40,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:40,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:41:40,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:40,564 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-28 08:41:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:41,059 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2020-10-28 08:41:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:41:41,060 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 118 [2020-10-28 08:41:41,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:41,061 INFO L225 Difference]: With dead ends: 121 [2020-10-28 08:41:41,061 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 08:41:41,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:41:41,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 08:41:41,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 08:41:41,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 08:41:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-28 08:41:41,068 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 118 [2020-10-28 08:41:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:41,068 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-28 08:41:41,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:41:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-28 08:41:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 08:41:41,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:41,069 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:41,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 08:41:41,070 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:41,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:41,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1321063097, now seen corresponding path program 21 times [2020-10-28 08:41:41,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:41,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732053896] [2020-10-28 08:41:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:41,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:46,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 08:41:46,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 08:41:46,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:46,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:41:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 08:41:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:41:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:46,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:46,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:46,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:46,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:41:46,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:46,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:46,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:46,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:41:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:46,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:46,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:46,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 08:41:46,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:46,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:46,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:46,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:46,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:46,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:46,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:41:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:46,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:46,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:46,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 08:41:46,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:46,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:46,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:41:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:46,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:46,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:46,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:46,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 08:41:46,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:46,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:46,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:46,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-28 08:41:46,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732053896] [2020-10-28 08:41:46,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:46,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:41:46,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598610071] [2020-10-28 08:41:46,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:41:46,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:46,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:41:46,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:41:46,329 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 9 states. [2020-10-28 08:41:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:46,467 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-28 08:41:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:41:46,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-28 08:41:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:46,469 INFO L225 Difference]: With dead ends: 111 [2020-10-28 08:41:46,469 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 08:41:46,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:41:46,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 08:41:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-28 08:41:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 08:41:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-28 08:41:46,475 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-28 08:41:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:46,476 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-28 08:41:46,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:41:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-28 08:41:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 08:41:46,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:46,477 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:46,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 08:41:46,478 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:46,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:46,478 INFO L82 PathProgramCache]: Analyzing trace with hash -938034363, now seen corresponding path program 22 times [2020-10-28 08:41:46,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:46,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864569217] [2020-10-28 08:41:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:46,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:51,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 08:41:51,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:41:51,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:51,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:41:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-28 08:41:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:41:51,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:51,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:51,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:51,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:51,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:51,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:41:51,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:51,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:51,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:51,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:51,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:51,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:41:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:51,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:51,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 08:41:51,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:51,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:51,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:41:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:51,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:51,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:51,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:51,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 08:41:51,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:51,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:41:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:41:51,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:41:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:51,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:51,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:51,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:51,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 08:41:51,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:51,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:51,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:51,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2020-10-28 08:41:51,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864569217] [2020-10-28 08:41:51,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:51,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:41:51,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802359377] [2020-10-28 08:41:51,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:41:51,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:51,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:41:51,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:41:51,908 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-28 08:41:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:52,461 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-28 08:41:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:41:52,462 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-28 08:41:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:52,463 INFO L225 Difference]: With dead ends: 129 [2020-10-28 08:41:52,463 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 08:41:52,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:41:52,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 08:41:52,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-28 08:41:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 08:41:52,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-28 08:41:52,470 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-28 08:41:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:52,470 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-28 08:41:52,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:41:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-28 08:41:52,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 08:41:52,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:52,471 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:52,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 08:41:52,472 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash -791420637, now seen corresponding path program 23 times [2020-10-28 08:41:52,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:52,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815659047] [2020-10-28 08:41:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:52,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:57,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 08:41:57,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:41:57,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:57,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:41:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:41:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:57,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:57,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:57,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:57,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:57,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:57,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:57,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:57,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:57,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:57,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:57,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:57,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:41:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:57,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 08:41:57,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:57,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:41:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:57,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:57,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 08:41:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:57,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:57,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:57,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 08:41:57,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:57,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:41:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:57,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 08:41:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:57,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:57,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 08:41:57,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:57,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:41:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2020-10-28 08:41:57,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815659047] [2020-10-28 08:41:57,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:57,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:41:57,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826226290] [2020-10-28 08:41:57,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:41:57,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:57,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:41:57,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:41:57,835 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-28 08:41:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:58,032 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-28 08:41:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:41:58,033 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-28 08:41:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:58,034 INFO L225 Difference]: With dead ends: 134 [2020-10-28 08:41:58,034 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 08:41:58,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:41:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 08:41:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 08:41:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 08:41:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-28 08:41:58,042 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-28 08:41:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:58,042 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-28 08:41:58,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:41:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-28 08:41:58,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 08:41:58,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:58,043 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:58,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 08:41:58,044 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:58,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:58,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1891911675, now seen corresponding path program 24 times [2020-10-28 08:41:58,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:58,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506438211] [2020-10-28 08:41:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:58,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:58,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:03,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 08:42:03,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:42:03,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:03,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:42:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 08:42:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:42:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:03,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:03,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:03,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:03,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:03,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:03,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:03,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:03,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:03,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:03,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:03,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:42:03,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:03,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:03,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:42:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:03,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:03,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:03,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:42:03,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:03,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:03,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 08:42:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:03,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:03,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:03,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:03,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 08:42:03,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:03,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:03,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:03,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:03,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:03,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-28 08:42:03,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506438211] [2020-10-28 08:42:03,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:03,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:42:03,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660858110] [2020-10-28 08:42:03,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:42:03,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:03,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:42:03,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:42:03,326 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 10 states. [2020-10-28 08:42:03,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:03,427 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-28 08:42:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:42:03,428 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-10-28 08:42:03,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:03,429 INFO L225 Difference]: With dead ends: 119 [2020-10-28 08:42:03,429 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 08:42:03,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:42:03,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 08:42:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 08:42:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:42:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-28 08:42:03,436 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-28 08:42:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:03,436 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-28 08:42:03,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:42:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-28 08:42:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 08:42:03,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:03,438 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:03,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 08:42:03,438 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:03,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:03,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1431169405, now seen corresponding path program 25 times [2020-10-28 08:42:03,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:03,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914728292] [2020-10-28 08:42:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:03,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:08,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 08:42:08,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:42:08,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:08,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 08:42:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:08,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:08,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:08,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:08,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:08,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:08,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:08,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:08,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:08,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:42:08,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:08,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:08,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:42:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:08,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:08,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:08,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:08,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 08:42:08,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:08,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:08,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:08,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:08,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:08,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:08,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 08:42:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:08,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:08,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:08,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 08:42:08,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:08,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-28 08:42:08,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914728292] [2020-10-28 08:42:08,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:08,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:42:08,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271640013] [2020-10-28 08:42:08,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:42:08,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:08,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:42:08,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:08,787 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-28 08:42:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:09,391 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-28 08:42:09,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:42:09,393 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-28 08:42:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:09,394 INFO L225 Difference]: With dead ends: 139 [2020-10-28 08:42:09,394 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 08:42:09,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-28 08:42:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 08:42:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-28 08:42:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 08:42:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-28 08:42:09,408 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-28 08:42:09,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:09,408 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-28 08:42:09,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:42:09,408 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-28 08:42:09,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 08:42:09,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:09,410 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:09,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 08:42:09,411 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:09,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1394510623, now seen corresponding path program 26 times [2020-10-28 08:42:09,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:09,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899832117] [2020-10-28 08:42:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:09,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:09,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:09,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:14,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 08:42:14,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:42:14,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:14,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 08:42:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:14,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:14,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:14,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:14,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:14,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:14,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:14,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:14,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:14,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:14,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:14,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 08:42:14,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:14,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:14,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 08:42:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:14,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:14,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:14,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 08:42:14,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:14,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:42:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:14,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 08:42:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:14,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:14,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:14,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 08:42:14,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:14,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:42:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2020-10-28 08:42:14,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899832117] [2020-10-28 08:42:14,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:14,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:42:14,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173909980] [2020-10-28 08:42:14,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:42:14,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:14,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:42:14,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:14,823 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-28 08:42:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:15,469 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-28 08:42:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:42:15,470 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-28 08:42:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:15,471 INFO L225 Difference]: With dead ends: 143 [2020-10-28 08:42:15,471 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 08:42:15,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:42:15,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 08:42:15,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-28 08:42:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 08:42:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-28 08:42:15,483 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-28 08:42:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:15,484 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-28 08:42:15,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:42:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-28 08:42:15,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 08:42:15,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:15,486 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:15,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 08:42:15,487 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:15,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:15,487 INFO L82 PathProgramCache]: Analyzing trace with hash -544680769, now seen corresponding path program 27 times [2020-10-28 08:42:15,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:15,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744169221] [2020-10-28 08:42:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:15,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:15,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:20,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 08:42:20,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:20,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:42:20,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:20,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:20,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:20,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:20,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:20,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:20,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:20,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:20,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:20,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:20,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:20,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:20,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 08:42:20,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:20,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 08:42:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:20,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:20,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:20,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:20,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 08:42:20,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:20,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:20,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:20,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 08:42:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:20,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:20,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 08:42:20,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:20,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 08:42:20,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744169221] [2020-10-28 08:42:20,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:20,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:42:20,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743926084] [2020-10-28 08:42:20,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:42:20,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:20,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:42:20,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:20,882 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-28 08:42:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:21,018 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2020-10-28 08:42:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:42:21,018 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-28 08:42:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:21,019 INFO L225 Difference]: With dead ends: 148 [2020-10-28 08:42:21,020 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 08:42:21,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 08:42:21,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-28 08:42:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 08:42:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-28 08:42:21,028 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-28 08:42:21,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:21,028 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-28 08:42:21,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:42:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-28 08:42:21,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 08:42:21,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:21,029 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:21,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 08:42:21,030 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:21,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:21,030 INFO L82 PathProgramCache]: Analyzing trace with hash 628795297, now seen corresponding path program 28 times [2020-10-28 08:42:21,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:21,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248075011] [2020-10-28 08:42:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:21,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:21,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:26,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 08:42:26,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:26,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:42:26,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:26,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:26,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:26,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:26,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:26,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:26,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:42:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:26,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:26,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:26,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 08:42:26,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:26,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 08:42:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:26,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:26,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:26,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:42:26,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:26,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:26,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:26,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:26,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:26,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 08:42:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:26,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:26,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:26,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 08:42:26,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:26,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 08:42:26,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248075011] [2020-10-28 08:42:26,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:26,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:42:26,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096931641] [2020-10-28 08:42:26,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:42:26,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:26,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:42:26,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:26,424 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-28 08:42:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:26,647 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-28 08:42:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:42:26,648 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-28 08:42:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:26,649 INFO L225 Difference]: With dead ends: 150 [2020-10-28 08:42:26,649 INFO L226 Difference]: Without dead ends: 92 [2020-10-28 08:42:26,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-28 08:42:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-28 08:42:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 08:42:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-28 08:42:26,660 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-28 08:42:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:26,660 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-28 08:42:26,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:42:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-28 08:42:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 08:42:26,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:26,662 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:26,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 08:42:26,662 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:26,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:26,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1237104125, now seen corresponding path program 29 times [2020-10-28 08:42:26,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:26,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352467109] [2020-10-28 08:42:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:26,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:27,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:31,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 08:42:31,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 08:42:31,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:31,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:42:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 08:42:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:42:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:31,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:31,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:31,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:31,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:31,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:31,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:42:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:31,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:31,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:31,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:31,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 08:42:31,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:31,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:42:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:31,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:31,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:31,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:42:31,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:31,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 08:42:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:31,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:31,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 08:42:31,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:31,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-28 08:42:32,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352467109] [2020-10-28 08:42:32,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:32,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:42:32,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439457294] [2020-10-28 08:42:32,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:42:32,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:32,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:42:32,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:42:32,007 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 11 states. [2020-10-28 08:42:32,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:32,165 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-28 08:42:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:42:32,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-28 08:42:32,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:32,167 INFO L225 Difference]: With dead ends: 133 [2020-10-28 08:42:32,167 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 08:42:32,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:42:32,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 08:42:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 08:42:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 08:42:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-28 08:42:32,178 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-28 08:42:32,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:32,179 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-28 08:42:32,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:42:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-28 08:42:32,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 08:42:32,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:32,183 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:32,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 08:42:32,183 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:32,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:32,184 INFO L82 PathProgramCache]: Analyzing trace with hash -7720703, now seen corresponding path program 30 times [2020-10-28 08:42:32,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:32,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521361202] [2020-10-28 08:42:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:32,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:32,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:37,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:37,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 08:42:37,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 08:42:37,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:37,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 08:42:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:37,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:37,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:37,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:37,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:42:37,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:37,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:42:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:37,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:37,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:37,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:37,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 08:42:37,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:37,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:37,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:37,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:42:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:37,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:37,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 08:42:37,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:37,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 08:42:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:37,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:37,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:37,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:37,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 08:42:37,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:37,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2020-10-28 08:42:37,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521361202] [2020-10-28 08:42:37,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:37,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:42:37,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236888304] [2020-10-28 08:42:37,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:42:37,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:37,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:42:37,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:37,658 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-28 08:42:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:38,370 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-10-28 08:42:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:42:38,370 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-28 08:42:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:38,372 INFO L225 Difference]: With dead ends: 155 [2020-10-28 08:42:38,372 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 08:42:38,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-28 08:42:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 08:42:38,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 08:42:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 08:42:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-28 08:42:38,380 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-28 08:42:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:38,380 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-28 08:42:38,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:42:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-28 08:42:38,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 08:42:38,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:38,382 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:38,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 08:42:38,382 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:38,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1686415393, now seen corresponding path program 31 times [2020-10-28 08:42:38,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:38,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230359051] [2020-10-28 08:42:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:38,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:43,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:43,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 08:42:43,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:43,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:42:43,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:43,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:42:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 08:42:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:42:43,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:43,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:43,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:43,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:43,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:42:43,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:43,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:43,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:42:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:43,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:43,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:42:43,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:43,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 08:42:43,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:43,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:42:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:42:43,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:43,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 08:42:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:43,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:43,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:42:43,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:43,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 08:42:43,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:43,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:43,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:43,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 08:42:43,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:43,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 08:42:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:43,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:43,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:43,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:42:43,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:43,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 08:42:43,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:43,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 08:42:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:43,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2096 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2020-10-28 08:42:43,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230359051] [2020-10-28 08:42:43,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:43,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:42:43,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197329192] [2020-10-28 08:42:43,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:42:43,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:43,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:42:43,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:42:43,867 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 18 states. [2020-10-28 08:42:44,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:44,634 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2020-10-28 08:42:44,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:42:44,635 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 160 [2020-10-28 08:42:44,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:44,636 INFO L225 Difference]: With dead ends: 159 [2020-10-28 08:42:44,636 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 08:42:44,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 08:42:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 08:42:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 08:42:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 08:42:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-28 08:42:44,643 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-28 08:42:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:44,643 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-28 08:42:44,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:42:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-28 08:42:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 08:42:44,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:44,645 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:44,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 08:42:44,645 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:44,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:44,645 INFO L82 PathProgramCache]: Analyzing trace with hash -180412355, now seen corresponding path program 32 times [2020-10-28 08:42:44,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:44,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818211740] [2020-10-28 08:42:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:49,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:49,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 08:42:49,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:49,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 08:42:49,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:49,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:49,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:49,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:49,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:49,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:49,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:49,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:49,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:49,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:42:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:49,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:49,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:49,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 08:42:49,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:49,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 08:42:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:49,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:49,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:50,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 08:42:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:50,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 08:42:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:50,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:50,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:50,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:50,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 08:42:50,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:50,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2020-10-28 08:42:50,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818211740] [2020-10-28 08:42:50,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:50,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:42:50,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382326123] [2020-10-28 08:42:50,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:42:50,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:50,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:42:50,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:50,129 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 17 states. [2020-10-28 08:42:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:50,275 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2020-10-28 08:42:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:42:50,276 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 166 [2020-10-28 08:42:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:50,277 INFO L225 Difference]: With dead ends: 164 [2020-10-28 08:42:50,277 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 08:42:50,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:50,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 08:42:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-28 08:42:50,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 08:42:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-28 08:42:50,284 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 166 [2020-10-28 08:42:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:50,284 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-28 08:42:50,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:42:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-28 08:42:50,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 08:42:50,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:50,285 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:50,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 08:42:50,286 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:50,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:50,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1435156127, now seen corresponding path program 33 times [2020-10-28 08:42:50,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:50,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847177641] [2020-10-28 08:42:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:50,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:55,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:55,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 08:42:55,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:55,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 08:42:55,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:55,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:42:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:42:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:55,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:55,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:55,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:55,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:55,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:55,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:55,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:55,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:55,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:55,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:55,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:55,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:42:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:55,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:55,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:55,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:55,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 08:42:55,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:55,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:55,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:55,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 08:42:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:55,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:55,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:55,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:55,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 08:42:55,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:55,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:55,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 08:42:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:55,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:55,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:55,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 08:42:55,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:55,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2390 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2020-10-28 08:42:55,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847177641] [2020-10-28 08:42:55,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:55,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:42:55,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399529120] [2020-10-28 08:42:55,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:42:55,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:55,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:42:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:42:55,830 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-28 08:42:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:56,030 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2020-10-28 08:42:56,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:42:56,031 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 168 [2020-10-28 08:42:56,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:56,031 INFO L225 Difference]: With dead ends: 166 [2020-10-28 08:42:56,032 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 08:42:56,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:42:56,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 08:42:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-28 08:42:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 08:42:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-28 08:42:56,040 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 168 [2020-10-28 08:42:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:56,040 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-28 08:42:56,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:42:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-28 08:42:56,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 08:42:56,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:56,042 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:56,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 08:42:56,042 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:56,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:56,043 INFO L82 PathProgramCache]: Analyzing trace with hash -781693823, now seen corresponding path program 34 times [2020-10-28 08:42:56,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:56,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030397136] [2020-10-28 08:42:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:56,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:56,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:56,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:01,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:01,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 08:43:01,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:01,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 08:43:01,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:01,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:43:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-28 08:43:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:43:01,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:01,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:01,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:01,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:01,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:01,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:01,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:01,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:01,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:01,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:01,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 08:43:01,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:01,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:01,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:01,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 08:43:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:01,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:01,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:01,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:01,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 08:43:01,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:01,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:01,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:01,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:01,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:01,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:01,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 08:43:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:01,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:01,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:01,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:01,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:01,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 08:43:01,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:01,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:01,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-28 08:43:01,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030397136] [2020-10-28 08:43:01,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:01,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:43:01,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508323673] [2020-10-28 08:43:01,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:43:01,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:01,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:43:01,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:43:01,427 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2020-10-28 08:43:01,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:01,602 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-28 08:43:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:43:01,603 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-28 08:43:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:01,604 INFO L225 Difference]: With dead ends: 147 [2020-10-28 08:43:01,604 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 08:43:01,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:43:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 08:43:01,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 08:43:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 08:43:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-28 08:43:01,611 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-28 08:43:01,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:01,611 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-28 08:43:01,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:43:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-28 08:43:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 08:43:01,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:01,612 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:01,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 08:43:01,618 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:01,618 INFO L82 PathProgramCache]: Analyzing trace with hash 433953791, now seen corresponding path program 35 times [2020-10-28 08:43:01,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:01,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531513438] [2020-10-28 08:43:01,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:06,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 08:43:06,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:06,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 08:43:06,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:06,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:06,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:06,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:43:06,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:06,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:06,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:06,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:43:06,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:06,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:06,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:06,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:06,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:06,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 08:43:06,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:06,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:06,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:06,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 08:43:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:07,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:07,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:07,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:07,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:07,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:07,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 08:43:07,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:07,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:07,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:07,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 08:43:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:07,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:07,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:07,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:07,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:07,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 08:43:07,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:07,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:07,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2436 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2211 trivial. 0 not checked. [2020-10-28 08:43:07,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531513438] [2020-10-28 08:43:07,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:07,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:43:07,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847839228] [2020-10-28 08:43:07,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:43:07,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:07,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:43:07,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:07,164 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 19 states. [2020-10-28 08:43:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:07,344 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2020-10-28 08:43:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:43:07,345 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 172 [2020-10-28 08:43:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:07,346 INFO L225 Difference]: With dead ends: 172 [2020-10-28 08:43:07,346 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 08:43:07,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:07,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 08:43:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 08:43:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 08:43:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-28 08:43:07,353 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-28 08:43:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:07,353 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-28 08:43:07,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:43:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-28 08:43:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 08:43:07,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:07,354 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 16, 16, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:07,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 08:43:07,355 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:07,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:07,355 INFO L82 PathProgramCache]: Analyzing trace with hash 782067937, now seen corresponding path program 36 times [2020-10-28 08:43:07,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:07,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847712749] [2020-10-28 08:43:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:07,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:07,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:07,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 08:43:12,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 08:43:12,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 08:43:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:12,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:12,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:12,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:12,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:43:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:12,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:12,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:12,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 08:43:12,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:12,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:12,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 08:43:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:12,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:12,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 08:43:12,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:12,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:12,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 08:43:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:12,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:12,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 08:43:12,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:12,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2467 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2020-10-28 08:43:12,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847712749] [2020-10-28 08:43:12,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:12,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:43:12,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120722109] [2020-10-28 08:43:12,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:43:12,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:12,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:43:12,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:12,915 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-28 08:43:13,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:13,697 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-10-28 08:43:13,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:43:13,698 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-28 08:43:13,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:13,699 INFO L225 Difference]: With dead ends: 173 [2020-10-28 08:43:13,699 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 08:43:13,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 08:43:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 08:43:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-28 08:43:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 08:43:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-28 08:43:13,707 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-28 08:43:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:13,708 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-28 08:43:13,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:43:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-28 08:43:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 08:43:13,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:13,709 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:13,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 08:43:13,709 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:13,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:13,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1999341247, now seen corresponding path program 37 times [2020-10-28 08:43:13,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:13,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326019273] [2020-10-28 08:43:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:18,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 08:43:18,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:18,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:43:18,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:18,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:43:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 08:43:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:43:18,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:18,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:18,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:18,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:43:18,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:18,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:18,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:18,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:43:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:18,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:43:18,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 08:43:18,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:18,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:18,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:18,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 08:43:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:19,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:43:19,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:19,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 08:43:19,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:19,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:19,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:19,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 08:43:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:19,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:43:19,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:19,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 08:43:19,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:19,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:19,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:19,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 08:43:19,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:19,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2671 trivial. 0 not checked. [2020-10-28 08:43:19,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326019273] [2020-10-28 08:43:19,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:19,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:43:19,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002496225] [2020-10-28 08:43:19,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:43:19,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:19,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:43:19,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:43:19,164 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 13 states.