/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_copyInitSum2_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:22:34,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:22:34,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:22:34,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:22:34,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:22:34,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:22:34,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:22:34,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:22:34,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:22:34,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:22:34,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:22:34,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:22:34,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:22:34,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:22:34,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:22:34,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:22:34,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:22:34,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:22:34,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:22:34,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:22:34,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:22:34,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:22:34,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:22:34,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:22:34,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:22:34,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:22:34,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:22:34,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:22:34,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:22:34,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:22:34,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:22:34,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:22:34,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:22:34,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:22:34,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:22:34,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:22:34,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:22:34,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:22:34,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:22:34,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:22:34,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:22:34,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:22:34,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:22:34,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:22:34,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:22:34,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:22:34,822 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:22:34,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:22:34,823 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:22:34,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:22:34,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:22:34,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:22:34,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:22:34,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:22:34,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:22:34,825 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:22:34,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:22:34,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:22:34,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:22:34,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:22:34,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:22:34,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:22:34,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:22:34,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:22:34,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:22:34,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:22:34,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:22:34,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:22:34,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:22:34,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:22:34,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:22:34,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:22:35,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:22:35,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:22:35,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:22:35,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:22:35,262 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:22:35,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInitSum2_ground-2.i [2020-10-27 14:22:35,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fdc1bd41/ae3499eb2761473c824ddc8c1466501d/FLAG76c521505 [2020-10-27 14:22:36,013 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:22:36,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copyInitSum2_ground-2.i [2020-10-27 14:22:36,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fdc1bd41/ae3499eb2761473c824ddc8c1466501d/FLAG76c521505 [2020-10-27 14:22:36,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fdc1bd41/ae3499eb2761473c824ddc8c1466501d [2020-10-27 14:22:36,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:22:36,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:22:36,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:22:36,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:22:36,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:22:36,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187ad513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36, skipping insertion in model container [2020-10-27 14:22:36,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:22:36,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:22:36,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:22:36,611 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:22:36,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:22:36,678 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:22:36,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36 WrapperNode [2020-10-27 14:22:36,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:22:36,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:22:36,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:22:36,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:22:36,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:22:36,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:22:36,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:22:36,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:22:36,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:22:36,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:22:36,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:22:36,879 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:22:36,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:22:36,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:22:36,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:22:36,881 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:22:36,881 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:22:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:22:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:22:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:22:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:22:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:22:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:22:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:22:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:22:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:22:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:22:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:22:37,422 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:22:37,422 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 14:22:37,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:22:37 BoogieIcfgContainer [2020-10-27 14:22:37,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:22:37,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:22:37,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:22:37,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:22:37,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:22:36" (1/3) ... [2020-10-27 14:22:37,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24306f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:22:37, skipping insertion in model container [2020-10-27 14:22:37,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36" (2/3) ... [2020-10-27 14:22:37,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24306f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:22:37, skipping insertion in model container [2020-10-27 14:22:37,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:22:37" (3/3) ... [2020-10-27 14:22:37,434 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum2_ground-2.i [2020-10-27 14:22:37,446 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:22:37,451 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:22:37,465 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:22:37,544 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:22:37,545 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:22:37,545 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:22:37,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:22:37,545 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:22:37,545 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:22:37,545 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:22:37,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:22:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-27 14:22:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 14:22:37,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:37,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:37,572 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:37,580 INFO L82 PathProgramCache]: Analyzing trace with hash -925662558, now seen corresponding path program 1 times [2020-10-27 14:22:37,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:37,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804952408] [2020-10-27 14:22:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:37,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:38,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 14:22:38,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:22:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-27 14:22:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:22:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:22:38,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:38,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:38,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:38,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:22:38,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:22:38,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804952408] [2020-10-27 14:22:38,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:22:38,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:22:38,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281850944] [2020-10-27 14:22:38,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:22:38,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:38,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:22:38,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:22:38,251 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-10-27 14:22:38,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:38,372 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2020-10-27 14:22:38,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:22:38,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-27 14:22:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:38,382 INFO L225 Difference]: With dead ends: 58 [2020-10-27 14:22:38,383 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 14:22:38,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:22:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 14:22:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 14:22:38,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:22:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-27 14:22:38,431 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 19 [2020-10-27 14:22:38,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:38,432 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-27 14:22:38,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:22:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-27 14:22:38,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 14:22:38,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:38,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:38,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:22:38,434 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:38,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:38,435 INFO L82 PathProgramCache]: Analyzing trace with hash -774064106, now seen corresponding path program 1 times [2020-10-27 14:22:38,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:38,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307527007] [2020-10-27 14:22:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:38,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 14:22:38,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:22:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-27 14:22:38,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:22:38,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:22:38,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:22:38,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:38,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:38,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:22:38,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:22:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:22:38,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307527007] [2020-10-27 14:22:38,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:22:38,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:22:38,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024784316] [2020-10-27 14:22:38,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:22:38,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:38,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:22:38,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:22:38,896 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2020-10-27 14:22:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:39,022 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-27 14:22:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:22:39,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-27 14:22:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:39,024 INFO L225 Difference]: With dead ends: 50 [2020-10-27 14:22:39,024 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:22:39,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:22:39,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:22:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-27 14:22:39,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:22:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-27 14:22:39,036 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2020-10-27 14:22:39,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:39,036 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-27 14:22:39,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:22:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-27 14:22:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:22:39,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:39,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:39,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:22:39,041 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:39,042 INFO L82 PathProgramCache]: Analyzing trace with hash 504393060, now seen corresponding path program 1 times [2020-10-27 14:22:39,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:39,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919006262] [2020-10-27 14:22:39,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:39,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:40,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:40,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:22:40,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1713 [2020-10-27 14:22:40,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:22:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 14:22:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:22:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:40,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:40,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:40,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:40,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:40,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:22:40,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:40,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:40,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:40,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:40,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:22:40,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919006262] [2020-10-27 14:22:40,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:40,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:22:40,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412382089] [2020-10-27 14:22:40,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:22:40,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:40,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:22:40,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:22:40,852 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-10-27 14:22:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:40,979 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-27 14:22:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:22:40,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-27 14:22:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:40,980 INFO L225 Difference]: With dead ends: 57 [2020-10-27 14:22:40,981 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:22:40,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:22:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:22:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 14:22:40,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:22:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-27 14:22:40,990 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 24 [2020-10-27 14:22:40,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:40,990 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-27 14:22:40,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:22:40,991 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-27 14:22:40,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 14:22:40,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:40,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:40,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:22:40,992 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:40,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:40,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1961250610, now seen corresponding path program 2 times [2020-10-27 14:22:40,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:40,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365165402] [2020-10-27 14:22:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:41,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:41,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:45,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:45,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:22:45,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:45,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4190 [2020-10-27 14:22:45,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:45,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:22:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:22:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:22:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:45,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:45,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:45,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:45,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:45,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:22:45,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 14:22:45,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365165402] [2020-10-27 14:22:45,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:45,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:22:45,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712725862] [2020-10-27 14:22:45,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:22:45,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:45,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:22:45,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:22:45,309 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2020-10-27 14:22:45,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:45,436 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-10-27 14:22:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:22:45,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-27 14:22:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:45,437 INFO L225 Difference]: With dead ends: 66 [2020-10-27 14:22:45,438 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 14:22:45,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:22:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 14:22:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-27 14:22:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:22:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-27 14:22:45,448 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-10-27 14:22:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:45,448 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-27 14:22:45,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:22:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-27 14:22:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:22:45,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:45,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:45,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:22:45,450 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash 407436188, now seen corresponding path program 3 times [2020-10-27 14:22:45,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:45,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712423994] [2020-10-27 14:22:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:45,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:50,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:50,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:22:50,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:22:50,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:22:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:22:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:22:50,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:50,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:50,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:50,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:50,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:22:50,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:22:50,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712423994] [2020-10-27 14:22:50,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:50,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:22:50,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094269591] [2020-10-27 14:22:50,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:22:50,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:50,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:22:50,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:22:50,569 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 7 states. [2020-10-27 14:22:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:50,724 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-10-27 14:22:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:22:50,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-27 14:22:50,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:50,726 INFO L225 Difference]: With dead ends: 75 [2020-10-27 14:22:50,726 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:22:50,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:22:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:22:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-27 14:22:50,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 14:22:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-27 14:22:50,735 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 34 [2020-10-27 14:22:50,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:50,735 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-27 14:22:50,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:22:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-27 14:22:50,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 14:22:50,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:50,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:50,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:22:50,737 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:50,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1192992378, now seen corresponding path program 4 times [2020-10-27 14:22:50,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:50,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63474226] [2020-10-27 14:22:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:50,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:51,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:55,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:55,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:22:55,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:55,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:22:55,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:55,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:22:55,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:22:55,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:22:55,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:55,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:55,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:55,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:55,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:22:55,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:55,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:22:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-27 14:22:55,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63474226] [2020-10-27 14:22:55,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:55,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:22:55,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777606824] [2020-10-27 14:22:55,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:22:55,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:55,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:22:55,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:22:55,884 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 8 states. [2020-10-27 14:22:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:56,076 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-27 14:22:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:22:56,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-27 14:22:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:56,077 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:22:56,078 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 14:22:56,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:22:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 14:22:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-27 14:22:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 14:22:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-27 14:22:56,086 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 39 [2020-10-27 14:22:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:56,087 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-27 14:22:56,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:22:56,087 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-27 14:22:56,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:22:56,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:56,088 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:56,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:22:56,089 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:56,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:56,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1238065620, now seen corresponding path program 5 times [2020-10-27 14:22:56,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:56,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635300866] [2020-10-27 14:22:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:56,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:57,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:01,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:01,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:23:01,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:01,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:23:01,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:01,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:23:01,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:23:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:23:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:01,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:01,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:01,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:01,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:01,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:23:01,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:23:01,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635300866] [2020-10-27 14:23:01,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:01,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:23:01,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114388681] [2020-10-27 14:23:01,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:23:01,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:01,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:23:01,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:23:01,223 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 9 states. [2020-10-27 14:23:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:01,408 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-10-27 14:23:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:23:01,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-27 14:23:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:01,410 INFO L225 Difference]: With dead ends: 93 [2020-10-27 14:23:01,410 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 14:23:01,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:23:01,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 14:23:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-27 14:23:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 14:23:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-27 14:23:01,426 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 44 [2020-10-27 14:23:01,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:01,428 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-27 14:23:01,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:23:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-27 14:23:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:23:01,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:01,429 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:01,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:23:01,430 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2060924354, now seen corresponding path program 6 times [2020-10-27 14:23:01,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:01,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555975297] [2020-10-27 14:23:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:01,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:06,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:06,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:23:06,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:06,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:23:06,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:23:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:23:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:23:06,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:06,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:06,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:06,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:06,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:06,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:06,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:06,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:06,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:06,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 14:23:06,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555975297] [2020-10-27 14:23:06,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:06,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:23:06,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233611566] [2020-10-27 14:23:06,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:23:06,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:06,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:23:06,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:23:06,591 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 10 states. [2020-10-27 14:23:06,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:06,792 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-10-27 14:23:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:23:06,793 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-27 14:23:06,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:06,794 INFO L225 Difference]: With dead ends: 102 [2020-10-27 14:23:06,794 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 14:23:06,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:23:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 14:23:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-27 14:23:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 14:23:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-27 14:23:06,803 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 49 [2020-10-27 14:23:06,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:06,803 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-27 14:23:06,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:23:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-27 14:23:06,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 14:23:06,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:06,805 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:06,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:23:06,805 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:06,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:06,806 INFO L82 PathProgramCache]: Analyzing trace with hash -623140852, now seen corresponding path program 7 times [2020-10-27 14:23:06,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:06,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917595569] [2020-10-27 14:23:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:06,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:11,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:11,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:23:11,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:23:11,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:23:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:23:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:23:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:11,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:11,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:11,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:11,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:23:11,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-27 14:23:11,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917595569] [2020-10-27 14:23:11,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:11,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:23:11,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905684647] [2020-10-27 14:23:11,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:23:11,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:11,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:23:11,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:23:11,977 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 11 states. [2020-10-27 14:23:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:12,182 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-10-27 14:23:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:23:12,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-27 14:23:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:12,183 INFO L225 Difference]: With dead ends: 111 [2020-10-27 14:23:12,184 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:23:12,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:23:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:23:12,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 14:23:12,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:23:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-10-27 14:23:12,193 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 54 [2020-10-27 14:23:12,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:12,193 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-10-27 14:23:12,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:23:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-10-27 14:23:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:23:12,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:12,194 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:12,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:23:12,195 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:12,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:12,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1758653174, now seen corresponding path program 8 times [2020-10-27 14:23:12,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:12,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193117133] [2020-10-27 14:23:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:12,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:17,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:17,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 14:23:17,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:17,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:23:17,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:23:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:23:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:23:17,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:17,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:17,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:17,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:17,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:17,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-27 14:23:17,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193117133] [2020-10-27 14:23:17,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:17,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:23:17,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091404880] [2020-10-27 14:23:17,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:23:17,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:17,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:23:17,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:23:17,380 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 12 states. [2020-10-27 14:23:17,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:17,613 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2020-10-27 14:23:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:23:17,614 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-27 14:23:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:17,615 INFO L225 Difference]: With dead ends: 120 [2020-10-27 14:23:17,615 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 14:23:17,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:23:17,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 14:23:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-10-27 14:23:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 14:23:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-10-27 14:23:17,623 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 59 [2020-10-27 14:23:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:17,624 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-10-27 14:23:17,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:23:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-10-27 14:23:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:23:17,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:17,625 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:17,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:23:17,626 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash 884848196, now seen corresponding path program 9 times [2020-10-27 14:23:17,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:17,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445530367] [2020-10-27 14:23:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:17,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:17,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:22,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:22,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:23:22,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:23:22,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:23:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:23:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:23:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:22,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:22,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:22,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:22,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:22,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-27 14:23:22,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445530367] [2020-10-27 14:23:22,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:22,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:23:22,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521442161] [2020-10-27 14:23:22,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:23:22,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:22,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:23:22,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:23:22,838 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 13 states. [2020-10-27 14:23:23,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:23,063 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2020-10-27 14:23:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:23:23,064 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-27 14:23:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:23,066 INFO L225 Difference]: With dead ends: 129 [2020-10-27 14:23:23,066 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 14:23:23,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:23:23,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 14:23:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-27 14:23:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 14:23:23,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-10-27 14:23:23,085 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 64 [2020-10-27 14:23:23,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:23,086 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-10-27 14:23:23,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:23:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-10-27 14:23:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 14:23:23,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:23,089 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:23,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:23:23,089 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:23,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:23,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1808712622, now seen corresponding path program 10 times [2020-10-27 14:23:23,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:23,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929159485] [2020-10-27 14:23:23,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:23,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:23,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:28,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:28,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 14:23:28,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:28,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 14:23:28,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:23:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:23:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:23:28,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:28,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:28,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:28,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:28,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:28,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:28,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:28,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:28,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-27 14:23:28,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929159485] [2020-10-27 14:23:28,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:28,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:23:28,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280063643] [2020-10-27 14:23:28,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:23:28,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:28,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:23:28,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:23:28,332 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 14 states. [2020-10-27 14:23:28,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:28,540 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2020-10-27 14:23:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:23:28,541 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-10-27 14:23:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:28,542 INFO L225 Difference]: With dead ends: 138 [2020-10-27 14:23:28,542 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 14:23:28,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:23:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 14:23:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-10-27 14:23:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:23:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-10-27 14:23:28,557 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 69 [2020-10-27 14:23:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:28,562 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-10-27 14:23:28,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:23:28,562 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-10-27 14:23:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 14:23:28,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:28,564 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:28,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:23:28,565 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:28,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1045060484, now seen corresponding path program 11 times [2020-10-27 14:23:28,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:28,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684221505] [2020-10-27 14:23:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:33,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:33,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:23:33,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:33,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:23:33,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:33,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:23:33,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:23:33,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:23:33,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:33,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:33,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:33,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:33,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:33,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:33,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:33,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:33,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:23:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-27 14:23:33,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684221505] [2020-10-27 14:23:33,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:33,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:23:33,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800771057] [2020-10-27 14:23:33,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:23:33,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:33,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:23:33,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:23:33,810 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 15 states. [2020-10-27 14:23:34,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:34,160 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2020-10-27 14:23:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:23:34,161 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 14:23:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:34,165 INFO L225 Difference]: With dead ends: 147 [2020-10-27 14:23:34,165 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:23:34,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:23:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:23:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 14:23:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:23:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2020-10-27 14:23:34,185 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 74 [2020-10-27 14:23:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:34,185 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2020-10-27 14:23:34,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:23:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2020-10-27 14:23:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:23:34,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:34,190 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:34,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:23:34,191 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:34,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1695044710, now seen corresponding path program 12 times [2020-10-27 14:23:34,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:34,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126955187] [2020-10-27 14:23:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:35,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:39,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:39,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 14:23:39,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:39,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 14:23:39,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:23:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:23:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:23:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:39,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:39,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:39,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:39,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:39,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:39,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:39,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:39,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-27 14:23:39,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126955187] [2020-10-27 14:23:39,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:39,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:23:39,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997315762] [2020-10-27 14:23:39,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:23:39,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:39,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:23:39,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:23:39,479 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand 16 states. [2020-10-27 14:23:39,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:39,744 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-10-27 14:23:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:23:39,745 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-27 14:23:39,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:39,746 INFO L225 Difference]: With dead ends: 156 [2020-10-27 14:23:39,746 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:23:39,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:23:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:23:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-10-27 14:23:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 14:23:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2020-10-27 14:23:39,753 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 79 [2020-10-27 14:23:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:39,754 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2020-10-27 14:23:39,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:23:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2020-10-27 14:23:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 14:23:39,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:39,755 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:39,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:23:39,755 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:39,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1392022860, now seen corresponding path program 13 times [2020-10-27 14:23:39,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:39,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872926883] [2020-10-27 14:23:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:39,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:44,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:44,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 14:23:44,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:23:44,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:23:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 14:23:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:23:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:45,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:45,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:45,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:45,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:45,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:45,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:45,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:45,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-27 14:23:45,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872926883] [2020-10-27 14:23:45,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:45,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:23:45,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887497494] [2020-10-27 14:23:45,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:23:45,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:45,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:23:45,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:23:45,050 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand 17 states. [2020-10-27 14:23:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:45,374 INFO L93 Difference]: Finished difference Result 165 states and 173 transitions. [2020-10-27 14:23:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:23:45,375 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 84 [2020-10-27 14:23:45,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:45,376 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:23:45,376 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 14:23:45,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:23:45,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 14:23:45,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-27 14:23:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 14:23:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2020-10-27 14:23:45,383 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 84 [2020-10-27 14:23:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:45,383 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2020-10-27 14:23:45,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:23:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2020-10-27 14:23:45,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 14:23:45,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:45,384 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:45,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:23:45,385 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:45,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:45,385 INFO L82 PathProgramCache]: Analyzing trace with hash 980131102, now seen corresponding path program 14 times [2020-10-27 14:23:45,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:45,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969664033] [2020-10-27 14:23:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:45,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:46,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:50,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:50,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 14:23:50,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:50,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:23:50,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:23:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:23:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:23:50,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:50,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:50,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:50,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:50,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:50,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:50,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-27 14:23:50,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969664033] [2020-10-27 14:23:50,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:50,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:23:50,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837909734] [2020-10-27 14:23:50,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:23:50,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:50,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:23:50,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:23:50,687 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand 18 states. [2020-10-27 14:23:51,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:51,035 INFO L93 Difference]: Finished difference Result 174 states and 182 transitions. [2020-10-27 14:23:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:23:51,035 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-10-27 14:23:51,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:51,036 INFO L225 Difference]: With dead ends: 174 [2020-10-27 14:23:51,036 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 14:23:51,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:23:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 14:23:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-10-27 14:23:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-27 14:23:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2020-10-27 14:23:51,050 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 89 [2020-10-27 14:23:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:51,051 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2020-10-27 14:23:51,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:23:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2020-10-27 14:23:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:23:51,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:51,052 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:51,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:23:51,052 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:51,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:51,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1560868628, now seen corresponding path program 15 times [2020-10-27 14:23:51,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:51,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595181988] [2020-10-27 14:23:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:51,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:52,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:56,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:56,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:23:56,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 14:23:56,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:23:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:23:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:23:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:56,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:56,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:56,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:56,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:56,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:56,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:56,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-27 14:23:56,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595181988] [2020-10-27 14:23:56,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:56,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:23:56,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581503271] [2020-10-27 14:23:56,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:23:56,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:56,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:23:56,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:23:56,414 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand 19 states. [2020-10-27 14:23:56,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:56,785 INFO L93 Difference]: Finished difference Result 183 states and 191 transitions. [2020-10-27 14:23:56,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:23:56,786 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-10-27 14:23:56,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:56,787 INFO L225 Difference]: With dead ends: 183 [2020-10-27 14:23:56,787 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:23:56,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:23:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:23:56,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:23:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:23:56,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2020-10-27 14:23:56,795 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 94 [2020-10-27 14:23:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:56,797 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2020-10-27 14:23:56,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:23:56,797 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2020-10-27 14:23:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 14:23:56,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:56,802 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:56,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:23:56,802 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:56,803 INFO L82 PathProgramCache]: Analyzing trace with hash 551853526, now seen corresponding path program 16 times [2020-10-27 14:23:56,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:56,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914327227] [2020-10-27 14:23:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:56,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:01,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 14:24:01,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:01,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-27 14:24:01,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:24:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:24:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:24:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:02,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:02,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:02,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:02,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:02,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-27 14:24:02,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914327227] [2020-10-27 14:24:02,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:02,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:24:02,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393640244] [2020-10-27 14:24:02,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:24:02,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:02,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:24:02,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:24:02,197 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand 20 states. [2020-10-27 14:24:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:02,521 INFO L93 Difference]: Finished difference Result 192 states and 200 transitions. [2020-10-27 14:24:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:24:02,522 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 99 [2020-10-27 14:24:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:02,523 INFO L225 Difference]: With dead ends: 192 [2020-10-27 14:24:02,523 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 14:24:02,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:24:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 14:24:02,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-27 14:24:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 14:24:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-10-27 14:24:02,529 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 99 [2020-10-27 14:24:02,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:02,530 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-10-27 14:24:02,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:24:02,530 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-10-27 14:24:02,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 14:24:02,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:02,531 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:02,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:24:02,531 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:02,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:02,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1865908444, now seen corresponding path program 17 times [2020-10-27 14:24:02,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:02,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832203769] [2020-10-27 14:24:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:02,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:03,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:07,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:07,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:24:07,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-27 14:24:07,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:24:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 14:24:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:24:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:07,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:07,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:07,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-10-27 14:24:07,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832203769] [2020-10-27 14:24:07,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:07,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:24:07,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553907150] [2020-10-27 14:24:07,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:24:07,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:07,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:24:07,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:24:07,999 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 21 states. [2020-10-27 14:24:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:08,384 INFO L93 Difference]: Finished difference Result 201 states and 209 transitions. [2020-10-27 14:24:08,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:24:08,384 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 104 [2020-10-27 14:24:08,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:08,386 INFO L225 Difference]: With dead ends: 201 [2020-10-27 14:24:08,386 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 14:24:08,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:24:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 14:24:08,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-27 14:24:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 14:24:08,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2020-10-27 14:24:08,394 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 104 [2020-10-27 14:24:08,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:08,394 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2020-10-27 14:24:08,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:24:08,394 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2020-10-27 14:24:08,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:24:08,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:08,395 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:08,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:24:08,395 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:08,396 INFO L82 PathProgramCache]: Analyzing trace with hash -597731698, now seen corresponding path program 18 times [2020-10-27 14:24:08,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:08,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805512486] [2020-10-27 14:24:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:08,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:08,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:13,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:13,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 14:24:13,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 14:24:13,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:13,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:24:13,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 14:24:13,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:24:13,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:13,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:13,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:13,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:13,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:24:13,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-10-27 14:24:13,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805512486] [2020-10-27 14:24:13,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:13,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:24:13,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676897461] [2020-10-27 14:24:13,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:24:13,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:13,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:24:13,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:24:13,851 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand 22 states. [2020-10-27 14:24:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:14,236 INFO L93 Difference]: Finished difference Result 210 states and 218 transitions. [2020-10-27 14:24:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:24:14,236 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2020-10-27 14:24:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:14,237 INFO L225 Difference]: With dead ends: 210 [2020-10-27 14:24:14,238 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 14:24:14,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:24:14,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 14:24:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-10-27 14:24:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-27 14:24:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2020-10-27 14:24:14,245 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 109 [2020-10-27 14:24:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:14,245 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2020-10-27 14:24:14,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:24:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2020-10-27 14:24:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 14:24:14,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:14,247 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:14,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:24:14,247 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:14,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:14,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1690291548, now seen corresponding path program 19 times [2020-10-27 14:24:14,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:14,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407894582] [2020-10-27 14:24:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:14,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:16,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:19,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:19,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 14:24:19,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-27 14:24:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:24:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 14:24:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:24:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:19,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:19,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:19,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:19,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:24:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-27 14:24:19,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407894582] [2020-10-27 14:24:19,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:19,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:24:19,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943980365] [2020-10-27 14:24:19,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:24:19,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:19,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:24:19,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:24:19,746 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand 23 states. [2020-10-27 14:24:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:20,161 INFO L93 Difference]: Finished difference Result 219 states and 227 transitions. [2020-10-27 14:24:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:24:20,162 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 114 [2020-10-27 14:24:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:20,163 INFO L225 Difference]: With dead ends: 219 [2020-10-27 14:24:20,164 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:24:20,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:24:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:24:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 14:24:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:24:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2020-10-27 14:24:20,172 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 114 [2020-10-27 14:24:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:20,172 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2020-10-27 14:24:20,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:24:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2020-10-27 14:24:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 14:24:20,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:20,174 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:20,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:24:20,175 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:20,175 INFO L82 PathProgramCache]: Analyzing trace with hash -3684538, now seen corresponding path program 20 times [2020-10-27 14:24:20,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:20,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745424007] [2020-10-27 14:24:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:22,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:25,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:25,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 14:24:25,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5370 [2020-10-27 14:24:25,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:24:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 14:24:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:24:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:25,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:25,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:25,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:25,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:25,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:25,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-10-27 14:24:26,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745424007] [2020-10-27 14:24:26,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:26,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:24:26,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004441096] [2020-10-27 14:24:26,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:24:26,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:26,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:24:26,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:24:26,012 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand 24 states. [2020-10-27 14:24:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:26,453 INFO L93 Difference]: Finished difference Result 228 states and 236 transitions. [2020-10-27 14:24:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:24:26,457 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 119 [2020-10-27 14:24:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:26,459 INFO L225 Difference]: With dead ends: 228 [2020-10-27 14:24:26,459 INFO L226 Difference]: Without dead ends: 131 [2020-10-27 14:24:26,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:24:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-27 14:24:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-27 14:24:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-27 14:24:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2020-10-27 14:24:26,466 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 119 [2020-10-27 14:24:26,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:26,466 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2020-10-27 14:24:26,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:24:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2020-10-27 14:24:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:24:26,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:26,468 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:26,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:24:26,468 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:26,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:26,469 INFO L82 PathProgramCache]: Analyzing trace with hash -836701292, now seen corresponding path program 21 times [2020-10-27 14:24:26,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:26,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825803867] [2020-10-27 14:24:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:26,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:31,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:31,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 14:24:31,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5265 [2020-10-27 14:24:31,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:24:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 14:24:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:24:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:32,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:32,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-10-27 14:24:32,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825803867] [2020-10-27 14:24:32,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:32,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:24:32,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137954935] [2020-10-27 14:24:32,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:24:32,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:32,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:24:32,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:24:32,207 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 25 states. [2020-10-27 14:24:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:32,579 INFO L93 Difference]: Finished difference Result 237 states and 245 transitions. [2020-10-27 14:24:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:24:32,580 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2020-10-27 14:24:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:32,581 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:24:32,581 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 14:24:32,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:24:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 14:24:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-10-27 14:24:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-27 14:24:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-27 14:24:32,589 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 124 [2020-10-27 14:24:32,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:32,590 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-27 14:24:32,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:24:32,590 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-27 14:24:32,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 14:24:32,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:32,591 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:32,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:24:32,592 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:32,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:32,592 INFO L82 PathProgramCache]: Analyzing trace with hash 755625982, now seen corresponding path program 22 times [2020-10-27 14:24:32,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:32,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223500362] [2020-10-27 14:24:32,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:32,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:37,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:37,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 14:24:37,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 14:24:37,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:24:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:24:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:24:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:38,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:38,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:38,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:38,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:38,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:38,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:38,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-10-27 14:24:38,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223500362] [2020-10-27 14:24:38,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:38,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:24:38,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405382207] [2020-10-27 14:24:38,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:24:38,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:38,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:24:38,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:24:38,154 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 26 states. [2020-10-27 14:24:38,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:38,495 INFO L93 Difference]: Finished difference Result 246 states and 254 transitions. [2020-10-27 14:24:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:24:38,496 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 129 [2020-10-27 14:24:38,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:38,497 INFO L225 Difference]: With dead ends: 246 [2020-10-27 14:24:38,497 INFO L226 Difference]: Without dead ends: 141 [2020-10-27 14:24:38,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:24:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-27 14:24:38,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2020-10-27 14:24:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 14:24:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2020-10-27 14:24:38,504 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 129 [2020-10-27 14:24:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:38,504 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2020-10-27 14:24:38,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:24:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2020-10-27 14:24:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 14:24:38,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:38,506 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:38,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:24:38,506 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:38,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:38,507 INFO L82 PathProgramCache]: Analyzing trace with hash -47189556, now seen corresponding path program 23 times [2020-10-27 14:24:38,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:38,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826876602] [2020-10-27 14:24:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:43,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:43,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 14:24:43,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-27 14:24:43,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:24:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:24:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:24:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:44,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-10-27 14:24:44,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826876602] [2020-10-27 14:24:44,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:44,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:24:44,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569906826] [2020-10-27 14:24:44,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:24:44,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:44,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:24:44,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:24:44,193 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand 27 states. [2020-10-27 14:24:44,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:44,617 INFO L93 Difference]: Finished difference Result 255 states and 263 transitions. [2020-10-27 14:24:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:24:44,617 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 134 [2020-10-27 14:24:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:44,619 INFO L225 Difference]: With dead ends: 255 [2020-10-27 14:24:44,619 INFO L226 Difference]: Without dead ends: 146 [2020-10-27 14:24:44,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:24:44,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-27 14:24:44,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2020-10-27 14:24:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-27 14:24:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2020-10-27 14:24:44,637 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 134 [2020-10-27 14:24:44,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:44,637 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2020-10-27 14:24:44,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:24:44,637 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2020-10-27 14:24:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 14:24:44,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:44,640 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:44,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:24:44,641 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:44,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:44,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1427230902, now seen corresponding path program 24 times [2020-10-27 14:24:44,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:44,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756412020] [2020-10-27 14:24:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:44,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:49,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:49,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 14:24:49,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:49,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 14:24:49,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:24:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:24:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:24:49,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:50,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:50,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:50,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:50,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:50,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:50,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-10-27 14:24:50,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756412020] [2020-10-27 14:24:50,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:50,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:24:50,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160102659] [2020-10-27 14:24:50,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:24:50,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:50,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:24:50,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:24:50,331 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand 28 states. [2020-10-27 14:24:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:50,797 INFO L93 Difference]: Finished difference Result 264 states and 272 transitions. [2020-10-27 14:24:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:24:50,797 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 139 [2020-10-27 14:24:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:50,799 INFO L225 Difference]: With dead ends: 264 [2020-10-27 14:24:50,799 INFO L226 Difference]: Without dead ends: 151 [2020-10-27 14:24:50,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:24:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-27 14:24:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-10-27 14:24:50,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-27 14:24:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2020-10-27 14:24:50,816 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 139 [2020-10-27 14:24:50,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:50,817 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2020-10-27 14:24:50,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:24:50,817 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2020-10-27 14:24:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 14:24:50,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:50,821 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:50,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:24:50,822 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:50,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:50,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1664141316, now seen corresponding path program 25 times [2020-10-27 14:24:50,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:50,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952467079] [2020-10-27 14:24:50,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:55,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:55,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:24:55,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:55,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-27 14:24:55,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:24:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 14:24:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:24:55,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:56,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:56,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:56,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:56,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:56,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:56,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:24:56,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:56,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:56,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:56,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-10-27 14:24:56,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952467079] [2020-10-27 14:24:56,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:56,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:24:56,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700552539] [2020-10-27 14:24:56,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:24:56,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:56,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:24:56,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:24:56,601 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand 29 states. [2020-10-27 14:24:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:56,988 INFO L93 Difference]: Finished difference Result 273 states and 281 transitions. [2020-10-27 14:24:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:24:56,989 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 144 [2020-10-27 14:24:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:56,990 INFO L225 Difference]: With dead ends: 273 [2020-10-27 14:24:56,990 INFO L226 Difference]: Without dead ends: 156 [2020-10-27 14:24:56,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:24:56,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-27 14:24:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2020-10-27 14:24:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 14:24:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 157 transitions. [2020-10-27 14:24:57,000 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 157 transitions. Word has length 144 [2020-10-27 14:24:57,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:57,000 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 157 transitions. [2020-10-27 14:24:57,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:24:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 157 transitions. [2020-10-27 14:24:57,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 14:24:57,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:57,001 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:57,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:24:57,002 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:57,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:57,002 INFO L82 PathProgramCache]: Analyzing trace with hash -137664146, now seen corresponding path program 26 times [2020-10-27 14:24:57,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:57,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748530811] [2020-10-27 14:24:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:02,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:02,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:25:02,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-27 14:25:02,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:25:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:25:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:25:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:02,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:02,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:02,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:02,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:02,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:02,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:02,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-10-27 14:25:02,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748530811] [2020-10-27 14:25:02,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:02,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:25:02,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31638390] [2020-10-27 14:25:02,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:25:02,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:25:02,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:25:02,822 INFO L87 Difference]: Start difference. First operand 154 states and 157 transitions. Second operand 30 states. [2020-10-27 14:25:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:03,364 INFO L93 Difference]: Finished difference Result 282 states and 290 transitions. [2020-10-27 14:25:03,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:25:03,370 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 149 [2020-10-27 14:25:03,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:03,371 INFO L225 Difference]: With dead ends: 282 [2020-10-27 14:25:03,371 INFO L226 Difference]: Without dead ends: 161 [2020-10-27 14:25:03,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:25:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-27 14:25:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2020-10-27 14:25:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-27 14:25:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2020-10-27 14:25:03,381 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 149 [2020-10-27 14:25:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:03,381 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2020-10-27 14:25:03,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:25:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2020-10-27 14:25:03,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 14:25:03,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:03,382 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:03,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:25:03,383 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:03,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1919383100, now seen corresponding path program 27 times [2020-10-27 14:25:03,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:03,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362096265] [2020-10-27 14:25:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:03,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:08,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:08,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 14:25:08,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5283 [2020-10-27 14:25:08,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:25:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:25:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:25:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:09,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:09,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:09,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:09,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:09,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:09,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:09,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:09,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1836 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-10-27 14:25:09,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362096265] [2020-10-27 14:25:09,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:09,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:25:09,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864088234] [2020-10-27 14:25:09,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:25:09,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:09,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:25:09,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:25:09,521 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand 31 states. [2020-10-27 14:25:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:09,985 INFO L93 Difference]: Finished difference Result 291 states and 299 transitions. [2020-10-27 14:25:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:25:09,986 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 154 [2020-10-27 14:25:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:09,987 INFO L225 Difference]: With dead ends: 291 [2020-10-27 14:25:09,987 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 14:25:09,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:25:09,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 14:25:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-10-27 14:25:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-27 14:25:09,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2020-10-27 14:25:09,997 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 154 [2020-10-27 14:25:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:09,997 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 167 transitions. [2020-10-27 14:25:09,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:25:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 167 transitions. [2020-10-27 14:25:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 14:25:09,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:09,998 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:09,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:25:09,999 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1679997478, now seen corresponding path program 28 times [2020-10-27 14:25:09,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:09,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537922299] [2020-10-27 14:25:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:10,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:10,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:15,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:15,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 14:25:15,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 14:25:15,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:25:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:25:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:25:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:15,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:15,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:15,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:15,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:15,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:15,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:15,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:15,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:15,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:15,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:15,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-10-27 14:25:15,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537922299] [2020-10-27 14:25:15,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:15,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:25:15,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769529230] [2020-10-27 14:25:15,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:25:15,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:15,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:25:15,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:25:15,792 INFO L87 Difference]: Start difference. First operand 164 states and 167 transitions. Second operand 32 states. [2020-10-27 14:25:16,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:16,315 INFO L93 Difference]: Finished difference Result 300 states and 308 transitions. [2020-10-27 14:25:16,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:25:16,316 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 159 [2020-10-27 14:25:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:16,317 INFO L225 Difference]: With dead ends: 300 [2020-10-27 14:25:16,317 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 14:25:16,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:25:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 14:25:16,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-10-27 14:25:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 14:25:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 172 transitions. [2020-10-27 14:25:16,329 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 172 transitions. Word has length 159 [2020-10-27 14:25:16,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:16,329 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 172 transitions. [2020-10-27 14:25:16,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:25:16,330 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 172 transitions. [2020-10-27 14:25:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 14:25:16,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:16,331 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:16,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:25:16,331 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:16,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:16,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1578630260, now seen corresponding path program 29 times [2020-10-27 14:25:16,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:16,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889114196] [2020-10-27 14:25:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:21,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:21,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 14:25:21,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-27 14:25:21,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:25:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:25:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:25:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:22,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:22,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:22,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-10-27 14:25:22,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889114196] [2020-10-27 14:25:22,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:22,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:25:22,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165520620] [2020-10-27 14:25:22,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:25:22,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:22,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:25:22,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:25:22,336 INFO L87 Difference]: Start difference. First operand 169 states and 172 transitions. Second operand 33 states. [2020-10-27 14:25:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:22,980 INFO L93 Difference]: Finished difference Result 309 states and 317 transitions. [2020-10-27 14:25:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:25:22,981 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 164 [2020-10-27 14:25:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:22,983 INFO L225 Difference]: With dead ends: 309 [2020-10-27 14:25:22,983 INFO L226 Difference]: Without dead ends: 176 [2020-10-27 14:25:22,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:25:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-27 14:25:22,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-10-27 14:25:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-27 14:25:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2020-10-27 14:25:22,993 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 164 [2020-10-27 14:25:22,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:22,993 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 177 transitions. [2020-10-27 14:25:22,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:25:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 177 transitions. [2020-10-27 14:25:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-27 14:25:22,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:22,995 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:22,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:25:22,995 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash -133971234, now seen corresponding path program 30 times [2020-10-27 14:25:22,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:22,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59781008] [2020-10-27 14:25:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:23,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:23,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:28,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:28,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 14:25:28,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5218 [2020-10-27 14:25:28,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:25:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:25:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:25:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:29,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:29,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:29,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:29,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-10-27 14:25:29,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59781008] [2020-10-27 14:25:29,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:29,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:25:29,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529257225] [2020-10-27 14:25:29,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:25:29,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:29,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:25:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:25:29,103 INFO L87 Difference]: Start difference. First operand 174 states and 177 transitions. Second operand 34 states. [2020-10-27 14:25:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:29,582 INFO L93 Difference]: Finished difference Result 318 states and 326 transitions. [2020-10-27 14:25:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:25:29,583 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 169 [2020-10-27 14:25:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:29,585 INFO L225 Difference]: With dead ends: 318 [2020-10-27 14:25:29,585 INFO L226 Difference]: Without dead ends: 181 [2020-10-27 14:25:29,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:25:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-27 14:25:29,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-10-27 14:25:29,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-27 14:25:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 182 transitions. [2020-10-27 14:25:29,594 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 182 transitions. Word has length 169 [2020-10-27 14:25:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:29,595 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 182 transitions. [2020-10-27 14:25:29,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:25:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 182 transitions. [2020-10-27 14:25:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 14:25:29,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:29,596 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:29,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:25:29,596 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:29,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:29,597 INFO L82 PathProgramCache]: Analyzing trace with hash -628729172, now seen corresponding path program 31 times [2020-10-27 14:25:29,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:29,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876023339] [2020-10-27 14:25:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:34,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:34,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 14:25:34,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:34,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 14:25:34,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:34,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:25:34,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 14:25:34,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:25:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:35,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:35,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:35,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:35,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:25:35,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-10-27 14:25:35,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876023339] [2020-10-27 14:25:35,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:35,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 14:25:35,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368110055] [2020-10-27 14:25:35,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 14:25:35,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:35,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 14:25:35,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:25:35,514 INFO L87 Difference]: Start difference. First operand 179 states and 182 transitions. Second operand 35 states. [2020-10-27 14:25:36,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:36,161 INFO L93 Difference]: Finished difference Result 327 states and 335 transitions. [2020-10-27 14:25:36,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:25:36,161 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 174 [2020-10-27 14:25:36,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:36,163 INFO L225 Difference]: With dead ends: 327 [2020-10-27 14:25:36,163 INFO L226 Difference]: Without dead ends: 186 [2020-10-27 14:25:36,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:25:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-27 14:25:36,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-10-27 14:25:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-27 14:25:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 187 transitions. [2020-10-27 14:25:36,173 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 187 transitions. Word has length 174 [2020-10-27 14:25:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:36,173 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 187 transitions. [2020-10-27 14:25:36,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 14:25:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 187 transitions. [2020-10-27 14:25:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-27 14:25:36,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:36,175 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:36,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:25:36,175 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:36,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:36,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1616544662, now seen corresponding path program 32 times [2020-10-27 14:25:36,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:36,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335232] [2020-10-27 14:25:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:36,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:36,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:41,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:41,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 14:25:41,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:41,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 14:25:41,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:41,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:25:41,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:25:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:25:41,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:42,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:42,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:42,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:42,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2576 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-10-27 14:25:42,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335232] [2020-10-27 14:25:42,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:42,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:25:42,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789017517] [2020-10-27 14:25:42,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:25:42,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:42,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:25:42,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:25:42,206 INFO L87 Difference]: Start difference. First operand 184 states and 187 transitions. Second operand 36 states. [2020-10-27 14:25:42,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:42,863 INFO L93 Difference]: Finished difference Result 336 states and 344 transitions. [2020-10-27 14:25:42,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:25:42,864 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 179 [2020-10-27 14:25:42,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:42,866 INFO L225 Difference]: With dead ends: 336 [2020-10-27 14:25:42,866 INFO L226 Difference]: Without dead ends: 191 [2020-10-27 14:25:42,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:25:42,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-27 14:25:42,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2020-10-27 14:25:42,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-27 14:25:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 192 transitions. [2020-10-27 14:25:42,876 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 192 transitions. Word has length 179 [2020-10-27 14:25:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:42,876 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 192 transitions. [2020-10-27 14:25:42,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:25:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 192 transitions. [2020-10-27 14:25:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-27 14:25:42,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:42,877 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:42,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:25:42,878 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:42,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:42,878 INFO L82 PathProgramCache]: Analyzing trace with hash -587820828, now seen corresponding path program 33 times [2020-10-27 14:25:42,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:42,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055484023] [2020-10-27 14:25:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:48,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:48,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 14:25:48,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5556 [2020-10-27 14:25:48,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 14:25:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 14:25:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:25:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:49,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:49,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:49,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:49,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:49,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:49,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:49,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:49,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:49,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2739 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-10-27 14:25:49,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055484023] [2020-10-27 14:25:49,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:49,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 14:25:49,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90864484] [2020-10-27 14:25:49,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 14:25:49,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:49,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 14:25:49,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:25:49,435 INFO L87 Difference]: Start difference. First operand 189 states and 192 transitions. Second operand 37 states. [2020-10-27 14:25:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:49,988 INFO L93 Difference]: Finished difference Result 345 states and 353 transitions. [2020-10-27 14:25:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:25:49,989 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 184 [2020-10-27 14:25:49,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:49,991 INFO L225 Difference]: With dead ends: 345 [2020-10-27 14:25:49,991 INFO L226 Difference]: Without dead ends: 196 [2020-10-27 14:25:49,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:25:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-27 14:25:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-10-27 14:25:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-27 14:25:50,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2020-10-27 14:25:50,001 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 184 [2020-10-27 14:25:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:50,001 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 197 transitions. [2020-10-27 14:25:50,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 14:25:50,001 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 197 transitions. [2020-10-27 14:25:50,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 14:25:50,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:50,003 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:50,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:25:50,003 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:50,004 INFO L82 PathProgramCache]: Analyzing trace with hash -653067186, now seen corresponding path program 34 times [2020-10-27 14:25:50,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:50,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572670513] [2020-10-27 14:25:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:56,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:56,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 14:25:56,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6037 [2020-10-27 14:25:56,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 14:25:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:25:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 14:25:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:57,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:57,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:57,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:57,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:57,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:57,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:57,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2907 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-10-27 14:25:57,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572670513] [2020-10-27 14:25:57,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:57,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:25:57,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136895308] [2020-10-27 14:25:57,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:25:57,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:57,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:25:57,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:25:57,077 INFO L87 Difference]: Start difference. First operand 194 states and 197 transitions. Second operand 38 states. [2020-10-27 14:25:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:57,584 INFO L93 Difference]: Finished difference Result 354 states and 362 transitions. [2020-10-27 14:25:57,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:25:57,585 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 189 [2020-10-27 14:25:57,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:57,586 INFO L225 Difference]: With dead ends: 354 [2020-10-27 14:25:57,586 INFO L226 Difference]: Without dead ends: 201 [2020-10-27 14:25:57,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:25:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-27 14:25:57,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2020-10-27 14:25:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-27 14:25:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 202 transitions. [2020-10-27 14:25:57,596 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 202 transitions. Word has length 189 [2020-10-27 14:25:57,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:57,597 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 202 transitions. [2020-10-27 14:25:57,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:25:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 202 transitions. [2020-10-27 14:25:57,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 14:25:57,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:57,598 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:57,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:25:57,598 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:57,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:57,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1538039580, now seen corresponding path program 35 times [2020-10-27 14:25:57,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:57,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022326861] [2020-10-27 14:25:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:57,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:02,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:02,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 14:26:02,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:02,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5312 [2020-10-27 14:26:02,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 14:26:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:26:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:26:02,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:04,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:04,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:26:04,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-10-27 14:26:04,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022326861] [2020-10-27 14:26:04,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:04,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 14:26:04,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545854997] [2020-10-27 14:26:04,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 14:26:04,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:04,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 14:26:04,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:26:04,075 INFO L87 Difference]: Start difference. First operand 199 states and 202 transitions. Second operand 39 states. [2020-10-27 14:26:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:04,631 INFO L93 Difference]: Finished difference Result 363 states and 371 transitions. [2020-10-27 14:26:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:26:04,632 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 194 [2020-10-27 14:26:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:04,634 INFO L225 Difference]: With dead ends: 363 [2020-10-27 14:26:04,634 INFO L226 Difference]: Without dead ends: 206 [2020-10-27 14:26:04,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:26:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-27 14:26:04,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2020-10-27 14:26:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-27 14:26:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions. [2020-10-27 14:26:04,644 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 194 [2020-10-27 14:26:04,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:04,644 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 207 transitions. [2020-10-27 14:26:04,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 14:26:04,644 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 207 transitions. [2020-10-27 14:26:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 14:26:04,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:04,646 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:04,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:26:04,646 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:04,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:04,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1830366470, now seen corresponding path program 36 times [2020-10-27 14:26:04,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:04,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119132544] [2020-10-27 14:26:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:04,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:10,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:10,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 14:26:10,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5666 [2020-10-27 14:26:10,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 14:26:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:26:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:26:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:11,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:11,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:11,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:11,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:11,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3258 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-10-27 14:26:11,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119132544] [2020-10-27 14:26:11,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:11,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:26:11,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773060114] [2020-10-27 14:26:11,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:26:11,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:11,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:26:11,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:26:11,523 INFO L87 Difference]: Start difference. First operand 204 states and 207 transitions. Second operand 40 states. [2020-10-27 14:26:12,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:12,260 INFO L93 Difference]: Finished difference Result 372 states and 380 transitions. [2020-10-27 14:26:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:26:12,261 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 199 [2020-10-27 14:26:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:12,262 INFO L225 Difference]: With dead ends: 372 [2020-10-27 14:26:12,262 INFO L226 Difference]: Without dead ends: 211 [2020-10-27 14:26:12,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:26:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-27 14:26:12,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2020-10-27 14:26:12,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-27 14:26:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 212 transitions. [2020-10-27 14:26:12,271 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 212 transitions. Word has length 199 [2020-10-27 14:26:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:12,272 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 212 transitions. [2020-10-27 14:26:12,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:26:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 212 transitions. [2020-10-27 14:26:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 14:26:12,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:12,273 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:12,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:26:12,274 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:12,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:12,274 INFO L82 PathProgramCache]: Analyzing trace with hash 233604436, now seen corresponding path program 37 times [2020-10-27 14:26:12,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:12,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329818660] [2020-10-27 14:26:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:12,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:12,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:17,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:17,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 14:26:17,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:17,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 14:26:17,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-27 14:26:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 14:26:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 14:26:17,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:18,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:18,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:18,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:18,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:18,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:18,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:18,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:18,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3441 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-10-27 14:26:18,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329818660] [2020-10-27 14:26:18,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:18,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 14:26:18,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579893872] [2020-10-27 14:26:18,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 14:26:18,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:18,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 14:26:18,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:26:18,616 INFO L87 Difference]: Start difference. First operand 209 states and 212 transitions. Second operand 41 states. [2020-10-27 14:26:19,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:19,330 INFO L93 Difference]: Finished difference Result 381 states and 389 transitions. [2020-10-27 14:26:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:26:19,330 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 204 [2020-10-27 14:26:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:19,331 INFO L225 Difference]: With dead ends: 381 [2020-10-27 14:26:19,331 INFO L226 Difference]: Without dead ends: 216 [2020-10-27 14:26:19,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:26:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-27 14:26:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2020-10-27 14:26:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-27 14:26:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 217 transitions. [2020-10-27 14:26:19,342 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 217 transitions. Word has length 204 [2020-10-27 14:26:19,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:19,342 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 217 transitions. [2020-10-27 14:26:19,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 14:26:19,342 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 217 transitions. [2020-10-27 14:26:19,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 14:26:19,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:19,344 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:19,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:26:19,344 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:19,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:19,344 INFO L82 PathProgramCache]: Analyzing trace with hash 911807934, now seen corresponding path program 38 times [2020-10-27 14:26:19,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:19,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684868223] [2020-10-27 14:26:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:24,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:24,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 14:26:24,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:26:24,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 14:26:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:26:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 14:26:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:25,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:25,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:25,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:25,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:26:25,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3629 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-10-27 14:26:25,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684868223] [2020-10-27 14:26:25,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:25,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:26:25,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784774652] [2020-10-27 14:26:25,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:26:25,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:25,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:26:25,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:26:25,706 INFO L87 Difference]: Start difference. First operand 214 states and 217 transitions. Second operand 42 states. [2020-10-27 14:26:26,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:26,475 INFO L93 Difference]: Finished difference Result 390 states and 398 transitions. [2020-10-27 14:26:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:26:26,476 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 209 [2020-10-27 14:26:26,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:26,480 INFO L225 Difference]: With dead ends: 390 [2020-10-27 14:26:26,480 INFO L226 Difference]: Without dead ends: 221 [2020-10-27 14:26:26,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:26:26,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-27 14:26:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2020-10-27 14:26:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-27 14:26:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 222 transitions. [2020-10-27 14:26:26,489 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 222 transitions. Word has length 209 [2020-10-27 14:26:26,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:26,489 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 222 transitions. [2020-10-27 14:26:26,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:26:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 222 transitions. [2020-10-27 14:26:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 14:26:26,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:26,491 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:26,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:26:26,491 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:26,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:26,491 INFO L82 PathProgramCache]: Analyzing trace with hash 737821580, now seen corresponding path program 39 times [2020-10-27 14:26:26,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:26,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026022262] [2020-10-27 14:26:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:26,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking...