/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/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:22:25,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:22:25,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:22:25,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:22:25,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:22:25,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:22:25,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:22:25,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:22:25,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:22:25,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:22:25,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:22:25,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:22:25,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:22:25,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:22:25,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:22:25,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:22:25,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:22:25,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:22:25,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:22:25,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:22:25,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:22:25,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:22:25,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:22:25,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:22:25,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:22:25,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:22:25,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:22:25,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:22:25,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:22:25,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:22:25,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:22:25,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:22:25,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:22:25,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:22:25,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:22:25,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:22:25,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:22:25,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:22:25,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:22:25,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:22:25,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:22:25,818 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 23:22:25,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:22:25,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:22:25,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:22:25,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:22:25,878 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:22:25,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:22:25,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:22:25,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:22:25,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:22:25,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:22:25,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:22:25,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:22:25,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:22:25,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:22:25,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:22:25,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:22:25,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:22:25,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:22:25,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:22:25,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:22:25,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:22:25,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:22:25,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:22:25,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:22:25,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:22:25,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:22:25,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:22:25,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:22:25,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:22:25,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:22:26,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:22:26,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:22:26,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:22:26,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:22:26,388 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:22:26,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 23:22:26,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2d759267/13c289c110d640f693f2143ca2f3bf63/FLAG6d8835d22 [2020-10-27 23:22:27,161 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:22:27,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 23:22:27,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2d759267/13c289c110d640f693f2143ca2f3bf63/FLAG6d8835d22 [2020-10-27 23:22:27,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2d759267/13c289c110d640f693f2143ca2f3bf63 [2020-10-27 23:22:27,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:22:27,428 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:22:27,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:22:27,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:22:27,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:22:27,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:22:27" (1/1) ... [2020-10-27 23:22:27,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493fad1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:27, skipping insertion in model container [2020-10-27 23:22:27,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:22:27" (1/1) ... [2020-10-27 23:22:27,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:22:27,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:22:27,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:22:27,972 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:22:28,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:22:28,175 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:22:28,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:28 WrapperNode [2020-10-27 23:22:28,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:22:28,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:22:28,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:22:28,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:22:28,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:28" (1/1) ... [2020-10-27 23:22:28,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:28" (1/1) ... [2020-10-27 23:22:28,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:28" (1/1) ... [2020-10-27 23:22:28,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:28" (1/1) ... [2020-10-27 23:22:28,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:28" (1/1) ... [2020-10-27 23:22:28,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:28" (1/1) ... [2020-10-27 23:22:28,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:28" (1/1) ... [2020-10-27 23:22:28,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:22:28,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:22:28,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:22:28,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:22:28,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:28" (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 23:22:28,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:22:28,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:22:28,415 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:22:28,416 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:22:28,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:22:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:22:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:22:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:22:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:22:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:22:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:22:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:22:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:22:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:22:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:22:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:22:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:22:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:22:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:22:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:22:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:22:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:22:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:22:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:22:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:22:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:22:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:22:29,832 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:22:29,833 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:22:29,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:22:29 BoogieIcfgContainer [2020-10-27 23:22:29,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:22:29,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:22:29,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:22:29,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:22:29,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:22:27" (1/3) ... [2020-10-27 23:22:29,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db509f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:22:29, skipping insertion in model container [2020-10-27 23:22:29,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:28" (2/3) ... [2020-10-27 23:22:29,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db509f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:22:29, skipping insertion in model container [2020-10-27 23:22:29,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:22:29" (3/3) ... [2020-10-27 23:22:29,848 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 23:22:29,861 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:22:29,866 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:22:29,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:22:29,923 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:22:29,923 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:22:29,923 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:22:29,924 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:22:29,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:22:29,924 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:22:29,924 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:22:29,924 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:22:29,949 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-10-27 23:22:29,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:22:29,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:29,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:22:29,962 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:29,969 INFO L82 PathProgramCache]: Analyzing trace with hash -64343422, now seen corresponding path program 1 times [2020-10-27 23:22:29,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:29,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806478615] [2020-10-27 23:22:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:30,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:31,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:31,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:34,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:35,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:35,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:22:35,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:22:35,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:22:35,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:22:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 23:22:35,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:22:35,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:22:36,184 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:22:36,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:36,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:36,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:36,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:36,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:22:36,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:36,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:36,257 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 23:22:36,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806478615] [2020-10-27 23:22:36,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:36,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:22:36,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623828171] [2020-10-27 23:22:36,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:22:36,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:36,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:22:36,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:22:36,287 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 4 states. [2020-10-27 23:22:36,927 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:22:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:38,330 INFO L93 Difference]: Finished difference Result 445 states and 769 transitions. [2020-10-27 23:22:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:22:38,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-27 23:22:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:38,348 INFO L225 Difference]: With dead ends: 445 [2020-10-27 23:22:38,349 INFO L226 Difference]: Without dead ends: 327 [2020-10-27 23:22:38,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:22:38,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-27 23:22:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 324. [2020-10-27 23:22:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-27 23:22:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 493 transitions. [2020-10-27 23:22:38,437 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 493 transitions. Word has length 99 [2020-10-27 23:22:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:38,442 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 493 transitions. [2020-10-27 23:22:38,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:22:38,443 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 493 transitions. [2020-10-27 23:22:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:22:38,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:38,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:22:38,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:22:38,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:38,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:38,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1641886283, now seen corresponding path program 1 times [2020-10-27 23:22:38,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:38,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046464200] [2020-10-27 23:22:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:38,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:38,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:38,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:38,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:40,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:41,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:43,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:43,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:22:43,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:22:43,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 23:22:43,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:43,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:22:43,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:22:43,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 23:22:43,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:44,026 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:22:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:44,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:44,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:44,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:44,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:22:44,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:44,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:44,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:44,099 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 23:22:44,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046464200] [2020-10-27 23:22:44,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:44,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:22:44,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022332564] [2020-10-27 23:22:44,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:22:44,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:44,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:22:44,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:22:44,106 INFO L87 Difference]: Start difference. First operand 324 states and 493 transitions. Second operand 5 states. [2020-10-27 23:22:45,479 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:22:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:46,304 INFO L93 Difference]: Finished difference Result 934 states and 1422 transitions. [2020-10-27 23:22:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:22:46,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-27 23:22:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:46,312 INFO L225 Difference]: With dead ends: 934 [2020-10-27 23:22:46,312 INFO L226 Difference]: Without dead ends: 621 [2020-10-27 23:22:46,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:22:46,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-10-27 23:22:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 618. [2020-10-27 23:22:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-27 23:22:46,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 933 transitions. [2020-10-27 23:22:46,401 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 933 transitions. Word has length 99 [2020-10-27 23:22:46,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:46,402 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 933 transitions. [2020-10-27 23:22:46,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:22:46,402 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 933 transitions. [2020-10-27 23:22:46,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:22:46,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:46,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:22:46,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:22:46,407 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:46,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1502820859, now seen corresponding path program 1 times [2020-10-27 23:22:46,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:46,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353320888] [2020-10-27 23:22:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:46,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:48,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:48,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:50,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:51,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:51,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:22:51,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:22:51,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:22:51,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:51,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:22:51,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:22:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 23:22:51,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:51,876 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:22:51,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:51,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:51,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:51,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:51,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:51,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:22:51,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:51,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:51,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:51,934 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 23:22:51,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353320888] [2020-10-27 23:22:51,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:51,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:22:51,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017509344] [2020-10-27 23:22:51,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:22:51,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:51,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:22:51,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:22:51,941 INFO L87 Difference]: Start difference. First operand 618 states and 933 transitions. Second operand 5 states. [2020-10-27 23:22:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:53,183 INFO L93 Difference]: Finished difference Result 1213 states and 1832 transitions. [2020-10-27 23:22:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:22:53,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-27 23:22:53,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:53,192 INFO L225 Difference]: With dead ends: 1213 [2020-10-27 23:22:53,193 INFO L226 Difference]: Without dead ends: 618 [2020-10-27 23:22:53,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:22:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-27 23:22:53,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-10-27 23:22:53,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-27 23:22:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 931 transitions. [2020-10-27 23:22:53,283 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 931 transitions. Word has length 100 [2020-10-27 23:22:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:53,286 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 931 transitions. [2020-10-27 23:22:53,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:22:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 931 transitions. [2020-10-27 23:22:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 23:22:53,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:53,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:22:53,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:22:53,297 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:53,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:53,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1513221577, now seen corresponding path program 1 times [2020-10-27 23:22:53,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:53,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704039363] [2020-10-27 23:22:53,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:53,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:53,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:53,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:58,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:58,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 23:22:58,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:22:58,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:22:58,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:22:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:22:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 23:22:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:22:58,796 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:22:58,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:58,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:58,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:58,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:22:58,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:58,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:58,882 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 23:22:58,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704039363] [2020-10-27 23:22:58,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:58,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:22:58,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929759963] [2020-10-27 23:22:58,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:22:58,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:58,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:22:58,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:22:58,886 INFO L87 Difference]: Start difference. First operand 618 states and 931 transitions. Second operand 4 states. [2020-10-27 23:23:00,278 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:23:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:01,056 INFO L93 Difference]: Finished difference Result 1370 states and 2088 transitions. [2020-10-27 23:23:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:01,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-27 23:23:01,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:01,063 INFO L225 Difference]: With dead ends: 1370 [2020-10-27 23:23:01,063 INFO L226 Difference]: Without dead ends: 905 [2020-10-27 23:23:01,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-10-27 23:23:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 902. [2020-10-27 23:23:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2020-10-27 23:23:01,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1342 transitions. [2020-10-27 23:23:01,129 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1342 transitions. Word has length 101 [2020-10-27 23:23:01,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:01,130 INFO L481 AbstractCegarLoop]: Abstraction has 902 states and 1342 transitions. [2020-10-27 23:23:01,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:01,130 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1342 transitions. [2020-10-27 23:23:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 23:23:01,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:01,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:01,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:23:01,133 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:01,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:01,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2029341380, now seen corresponding path program 1 times [2020-10-27 23:23:01,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:01,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888572940] [2020-10-27 23:23:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:01,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:02,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:02,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:06,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:06,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 23:23:06,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:23:06,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:23:06,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:23:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 23:23:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:06,615 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:06,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:06,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:06,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:06,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:23:06,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:06,669 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 23:23:06,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888572940] [2020-10-27 23:23:06,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:06,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:06,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622875881] [2020-10-27 23:23:06,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:06,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:06,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:06,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:06,672 INFO L87 Difference]: Start difference. First operand 902 states and 1342 transitions. Second operand 5 states. [2020-10-27 23:23:08,229 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:09,147 INFO L93 Difference]: Finished difference Result 2260 states and 3365 transitions. [2020-10-27 23:23:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:23:09,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-27 23:23:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:09,159 INFO L225 Difference]: With dead ends: 2260 [2020-10-27 23:23:09,160 INFO L226 Difference]: Without dead ends: 1413 [2020-10-27 23:23:09,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:09,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-10-27 23:23:09,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1409. [2020-10-27 23:23:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1409 states. [2020-10-27 23:23:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 2084 transitions. [2020-10-27 23:23:09,279 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 2084 transitions. Word has length 103 [2020-10-27 23:23:09,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:09,279 INFO L481 AbstractCegarLoop]: Abstraction has 1409 states and 2084 transitions. [2020-10-27 23:23:09,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 2084 transitions. [2020-10-27 23:23:09,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 23:23:09,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:09,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:09,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:23:09,282 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:09,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:09,283 INFO L82 PathProgramCache]: Analyzing trace with hash -848443187, now seen corresponding path program 1 times [2020-10-27 23:23:09,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:09,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975323782] [2020-10-27 23:23:09,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:09,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:11,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:14,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 23:23:14,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:23:14,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:23:14,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:14,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:14,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 23:23:14,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:23:14,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:14,662 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:14,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:14,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:14,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:23:14,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:14,720 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 23:23:14,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975323782] [2020-10-27 23:23:14,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:14,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:14,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690319807] [2020-10-27 23:23:14,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:14,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:14,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:14,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:14,725 INFO L87 Difference]: Start difference. First operand 1409 states and 2084 transitions. Second operand 4 states. [2020-10-27 23:23:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:16,842 INFO L93 Difference]: Finished difference Result 2676 states and 3984 transitions. [2020-10-27 23:23:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:23:16,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-27 23:23:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:16,855 INFO L225 Difference]: With dead ends: 2676 [2020-10-27 23:23:16,855 INFO L226 Difference]: Without dead ends: 1651 [2020-10-27 23:23:16,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-10-27 23:23:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1409. [2020-10-27 23:23:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1409 states. [2020-10-27 23:23:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 2083 transitions. [2020-10-27 23:23:16,968 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 2083 transitions. Word has length 104 [2020-10-27 23:23:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:16,969 INFO L481 AbstractCegarLoop]: Abstraction has 1409 states and 2083 transitions. [2020-10-27 23:23:16,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 2083 transitions. [2020-10-27 23:23:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 23:23:16,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:16,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:16,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:23:16,972 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:16,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash -833160148, now seen corresponding path program 1 times [2020-10-27 23:23:16,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:16,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894406727] [2020-10-27 23:23:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:17,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:21,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:21,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:21,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:22,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:22,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 23:23:22,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:23:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:23:22,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 23:23:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:23:22,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:22,399 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:22,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:22,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:22,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:22,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:23:22,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:22,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:22,452 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 23:23:22,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894406727] [2020-10-27 23:23:22,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:22,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:22,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95648785] [2020-10-27 23:23:22,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:22,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:22,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:22,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:22,455 INFO L87 Difference]: Start difference. First operand 1409 states and 2083 transitions. Second operand 4 states. [2020-10-27 23:23:23,971 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:23:24,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:24,849 INFO L93 Difference]: Finished difference Result 3599 states and 5404 transitions. [2020-10-27 23:23:24,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:24,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-27 23:23:24,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:24,863 INFO L225 Difference]: With dead ends: 3599 [2020-10-27 23:23:24,864 INFO L226 Difference]: Without dead ends: 2572 [2020-10-27 23:23:24,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:24,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2020-10-27 23:23:25,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2569. [2020-10-27 23:23:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2569 states. [2020-10-27 23:23:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3785 transitions. [2020-10-27 23:23:25,050 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3785 transitions. Word has length 105 [2020-10-27 23:23:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:25,051 INFO L481 AbstractCegarLoop]: Abstraction has 2569 states and 3785 transitions. [2020-10-27 23:23:25,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3785 transitions. [2020-10-27 23:23:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 23:23:25,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:25,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:25,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:23:25,055 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:25,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:25,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1568446511, now seen corresponding path program 1 times [2020-10-27 23:23:25,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:25,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123514717] [2020-10-27 23:23:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:25,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:25,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:25,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:26,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:30,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:30,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 23:23:30,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:23:30,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:23:30,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 23:23:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 23:23:30,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:30,502 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:30,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:30,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:30,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:30,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:23:30,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:30,540 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 23:23:30,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123514717] [2020-10-27 23:23:30,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:30,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:30,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103057873] [2020-10-27 23:23:30,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:30,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:30,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:30,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:30,543 INFO L87 Difference]: Start difference. First operand 2569 states and 3785 transitions. Second operand 5 states. [2020-10-27 23:23:31,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:31,762 INFO L93 Difference]: Finished difference Result 4474 states and 6612 transitions. [2020-10-27 23:23:31,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:31,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-27 23:23:31,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:31,773 INFO L225 Difference]: With dead ends: 4474 [2020-10-27 23:23:31,774 INFO L226 Difference]: Without dead ends: 2092 [2020-10-27 23:23:31,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:23:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2020-10-27 23:23:31,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2092. [2020-10-27 23:23:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2092 states. [2020-10-27 23:23:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3068 transitions. [2020-10-27 23:23:31,926 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3068 transitions. Word has length 105 [2020-10-27 23:23:31,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:31,927 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 3068 transitions. [2020-10-27 23:23:31,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3068 transitions. [2020-10-27 23:23:31,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 23:23:31,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:31,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:31,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:23:31,931 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:31,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:31,932 INFO L82 PathProgramCache]: Analyzing trace with hash -902935714, now seen corresponding path program 1 times [2020-10-27 23:23:31,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:31,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101339820] [2020-10-27 23:23:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:31,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:33,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:37,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:37,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 23:23:37,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:23:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 23:23:37,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:23:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 23:23:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:37,435 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:37,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:37,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:37,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:37,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:37,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:23:37,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:37,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:37,483 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 23:23:37,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101339820] [2020-10-27 23:23:37,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:37,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:37,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116321927] [2020-10-27 23:23:37,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:37,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:37,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:37,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:37,485 INFO L87 Difference]: Start difference. First operand 2092 states and 3068 transitions. Second operand 5 states. [2020-10-27 23:23:38,987 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:40,037 INFO L93 Difference]: Finished difference Result 3432 states and 5065 transitions. [2020-10-27 23:23:40,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:23:40,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-27 23:23:40,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:40,049 INFO L225 Difference]: With dead ends: 3432 [2020-10-27 23:23:40,049 INFO L226 Difference]: Without dead ends: 2268 [2020-10-27 23:23:40,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2020-10-27 23:23:40,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2206. [2020-10-27 23:23:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2206 states. [2020-10-27 23:23:40,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3205 transitions. [2020-10-27 23:23:40,232 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3205 transitions. Word has length 107 [2020-10-27 23:23:40,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:40,233 INFO L481 AbstractCegarLoop]: Abstraction has 2206 states and 3205 transitions. [2020-10-27 23:23:40,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:40,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3205 transitions. [2020-10-27 23:23:40,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 23:23:40,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:40,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:40,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:23:40,237 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:40,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1457758092, now seen corresponding path program 1 times [2020-10-27 23:23:40,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:40,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997885331] [2020-10-27 23:23:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:40,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:40,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:40,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:41,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:41,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:45,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:45,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 23:23:45,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:23:45,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:23:45,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:23:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 23:23:45,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:45,677 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:45,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:45,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:45,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:45,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:23:45,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:45,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:45,720 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 23:23:45,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997885331] [2020-10-27 23:23:45,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:45,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:45,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800802422] [2020-10-27 23:23:45,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:45,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:45,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:45,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:45,723 INFO L87 Difference]: Start difference. First operand 2206 states and 3205 transitions. Second operand 5 states. [2020-10-27 23:23:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:46,954 INFO L93 Difference]: Finished difference Result 4365 states and 6341 transitions. [2020-10-27 23:23:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:46,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-27 23:23:46,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:46,965 INFO L225 Difference]: With dead ends: 4365 [2020-10-27 23:23:46,965 INFO L226 Difference]: Without dead ends: 2206 [2020-10-27 23:23:46,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:23:46,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2020-10-27 23:23:47,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2204. [2020-10-27 23:23:47,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2204 states. [2020-10-27 23:23:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3197 transitions. [2020-10-27 23:23:47,146 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 3197 transitions. Word has length 108 [2020-10-27 23:23:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:47,146 INFO L481 AbstractCegarLoop]: Abstraction has 2204 states and 3197 transitions. [2020-10-27 23:23:47,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 3197 transitions. [2020-10-27 23:23:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 23:23:47,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:47,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:47,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:23:47,151 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:47,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:47,151 INFO L82 PathProgramCache]: Analyzing trace with hash -768490760, now seen corresponding path program 1 times [2020-10-27 23:23:47,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:47,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793644643] [2020-10-27 23:23:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:47,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:48,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:52,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 23:23:52,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:23:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:23:52,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:23:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:23:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:52,592 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:52,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:52,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:52,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:52,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:23:52,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:52,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:52,631 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 23:23:52,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793644643] [2020-10-27 23:23:52,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:52,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:52,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655186010] [2020-10-27 23:23:52,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:52,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:52,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:52,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:52,633 INFO L87 Difference]: Start difference. First operand 2204 states and 3197 transitions. Second operand 5 states. [2020-10-27 23:23:54,051 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:55,036 INFO L93 Difference]: Finished difference Result 5618 states and 8132 transitions. [2020-10-27 23:23:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:23:55,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-27 23:23:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:55,053 INFO L225 Difference]: With dead ends: 5618 [2020-10-27 23:23:55,054 INFO L226 Difference]: Without dead ends: 3479 [2020-10-27 23:23:55,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2020-10-27 23:23:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3473. [2020-10-27 23:23:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3473 states. [2020-10-27 23:23:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 4974 transitions. [2020-10-27 23:23:55,341 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 4974 transitions. Word has length 109 [2020-10-27 23:23:55,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:55,341 INFO L481 AbstractCegarLoop]: Abstraction has 3473 states and 4974 transitions. [2020-10-27 23:23:55,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 4974 transitions. [2020-10-27 23:23:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 23:23:55,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:55,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:55,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:23:55,347 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:55,348 INFO L82 PathProgramCache]: Analyzing trace with hash 915917428, now seen corresponding path program 1 times [2020-10-27 23:23:55,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:55,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539936505] [2020-10-27 23:23:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:55,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:55,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:55,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:55,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:00,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:00,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 23:24:00,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:24:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:24:00,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:24:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:24:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:00,793 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:24:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:00,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:00,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:00,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:00,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:24:00,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:00,832 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 23:24:00,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539936505] [2020-10-27 23:24:00,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:00,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:00,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6797983] [2020-10-27 23:24:00,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:00,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:00,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:00,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:00,834 INFO L87 Difference]: Start difference. First operand 3473 states and 4974 transitions. Second operand 5 states. [2020-10-27 23:24:02,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:02,176 INFO L93 Difference]: Finished difference Result 6905 states and 9889 transitions. [2020-10-27 23:24:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:02,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-27 23:24:02,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:02,193 INFO L225 Difference]: With dead ends: 6905 [2020-10-27 23:24:02,194 INFO L226 Difference]: Without dead ends: 3469 [2020-10-27 23:24:02,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:24:02,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2020-10-27 23:24:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 3469. [2020-10-27 23:24:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3469 states. [2020-10-27 23:24:02,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3469 states to 3469 states and 4962 transitions. [2020-10-27 23:24:02,449 INFO L78 Accepts]: Start accepts. Automaton has 3469 states and 4962 transitions. Word has length 110 [2020-10-27 23:24:02,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:02,449 INFO L481 AbstractCegarLoop]: Abstraction has 3469 states and 4962 transitions. [2020-10-27 23:24:02,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:02,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3469 states and 4962 transitions. [2020-10-27 23:24:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 23:24:02,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:02,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:02,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:24:02,454 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:02,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:02,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1652416211, now seen corresponding path program 1 times [2020-10-27 23:24:02,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:02,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676970970] [2020-10-27 23:24:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:02,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:07,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:07,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 23:24:07,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:24:07,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4752 [2020-10-27 23:24:07,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:07,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:24:07,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 23:24:07,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 23:24:07,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:07,644 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:24:07,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:07,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:07,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:07,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:07,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:24:07,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:07,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:07,694 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 23:24:07,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676970970] [2020-10-27 23:24:07,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:07,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:24:07,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913218112] [2020-10-27 23:24:07,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:24:07,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:07,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:24:07,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:24:07,696 INFO L87 Difference]: Start difference. First operand 3469 states and 4962 transitions. Second operand 4 states. [2020-10-27 23:24:09,248 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:24:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:10,209 INFO L93 Difference]: Finished difference Result 7967 states and 11588 transitions. [2020-10-27 23:24:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:10,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-27 23:24:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:10,232 INFO L225 Difference]: With dead ends: 7967 [2020-10-27 23:24:10,232 INFO L226 Difference]: Without dead ends: 5325 [2020-10-27 23:24:10,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5325 states. [2020-10-27 23:24:10,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5325 to 5322. [2020-10-27 23:24:10,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5322 states. [2020-10-27 23:24:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 7548 transitions. [2020-10-27 23:24:10,633 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 7548 transitions. Word has length 111 [2020-10-27 23:24:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:10,633 INFO L481 AbstractCegarLoop]: Abstraction has 5322 states and 7548 transitions. [2020-10-27 23:24:10,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:24:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 7548 transitions. [2020-10-27 23:24:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 23:24:10,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:10,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:10,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:24:10,640 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:10,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:10,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1117211093, now seen corresponding path program 1 times [2020-10-27 23:24:10,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:10,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815905725] [2020-10-27 23:24:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:10,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:10,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:11,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:11,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:13,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:15,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:15,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:24:15,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:24:15,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:24:15,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:15,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:24:15,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 23:24:15,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 23:24:15,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:16,134 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:24:16,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:16,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:16,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:16,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:24:16,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:16,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:16,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:16,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:16,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:16,193 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 23:24:16,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815905725] [2020-10-27 23:24:16,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:16,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:24:16,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281184534] [2020-10-27 23:24:16,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:24:16,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:16,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:24:16,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:24:16,195 INFO L87 Difference]: Start difference. First operand 5322 states and 7548 transitions. Second operand 6 states. [2020-10-27 23:24:16,621 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 23:24:17,814 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:24:19,642 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:24:20,045 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:24:20,617 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 23:24:20,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:20,812 INFO L93 Difference]: Finished difference Result 16798 states and 25896 transitions. [2020-10-27 23:24:20,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:24:20,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-27 23:24:20,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:20,853 INFO L225 Difference]: With dead ends: 16798 [2020-10-27 23:24:20,854 INFO L226 Difference]: Without dead ends: 13920 [2020-10-27 23:24:20,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:24:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13920 states. [2020-10-27 23:24:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13920 to 8176. [2020-10-27 23:24:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8176 states. [2020-10-27 23:24:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 11964 transitions. [2020-10-27 23:24:21,615 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 11964 transitions. Word has length 113 [2020-10-27 23:24:21,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:21,616 INFO L481 AbstractCegarLoop]: Abstraction has 8176 states and 11964 transitions. [2020-10-27 23:24:21,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:24:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 11964 transitions. [2020-10-27 23:24:21,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 23:24:21,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:21,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:21,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:24:21,621 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:21,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:21,622 INFO L82 PathProgramCache]: Analyzing trace with hash 126450526, now seen corresponding path program 1 times [2020-10-27 23:24:21,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:21,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708445560] [2020-10-27 23:24:21,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:21,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:21,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:26,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:24:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:24:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:24:26,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 23:24:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 23:24:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:27,041 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:24:27,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:27,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:27,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:27,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:27,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:24:27,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:27,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:27,074 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 23:24:27,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708445560] [2020-10-27 23:24:27,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:27,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:27,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336091195] [2020-10-27 23:24:27,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:27,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:27,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:27,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:27,077 INFO L87 Difference]: Start difference. First operand 8176 states and 11964 transitions. Second operand 5 states. [2020-10-27 23:24:27,462 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:24:28,608 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 23:24:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:30,089 INFO L93 Difference]: Finished difference Result 17221 states and 26078 transitions. [2020-10-27 23:24:30,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:24:30,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-27 23:24:30,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:30,119 INFO L225 Difference]: With dead ends: 17221 [2020-10-27 23:24:30,119 INFO L226 Difference]: Without dead ends: 11052 [2020-10-27 23:24:30,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:24:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11052 states. [2020-10-27 23:24:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11052 to 11046. [2020-10-27 23:24:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11046 states. [2020-10-27 23:24:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11046 states to 11046 states and 16446 transitions. [2020-10-27 23:24:31,171 INFO L78 Accepts]: Start accepts. Automaton has 11046 states and 16446 transitions. Word has length 113 [2020-10-27 23:24:31,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:31,171 INFO L481 AbstractCegarLoop]: Abstraction has 11046 states and 16446 transitions. [2020-10-27 23:24:31,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand 11046 states and 16446 transitions. [2020-10-27 23:24:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 23:24:31,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:31,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:31,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:24:31,175 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:31,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:31,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1510659858, now seen corresponding path program 1 times [2020-10-27 23:24:31,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:31,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815694627] [2020-10-27 23:24:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:31,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:31,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:31,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:32,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:32,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:32,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:33,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:33,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:24:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:24:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:24:36,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:24:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 23:24:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 23:24:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:36,619 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:24:36,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:36,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:36,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:24:36,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:36,654 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 23:24:36,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815694627] [2020-10-27 23:24:36,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:36,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:24:36,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991971423] [2020-10-27 23:24:36,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:24:36,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:36,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:24:36,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:24:36,657 INFO L87 Difference]: Start difference. First operand 11046 states and 16446 transitions. Second operand 7 states. [2020-10-27 23:24:38,244 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:24:38,612 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 23:24:38,981 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 23:24:39,536 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:24:39,948 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 23:24:43,428 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 23:24:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:45,542 INFO L93 Difference]: Finished difference Result 65775 states and 101078 transitions. [2020-10-27 23:24:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:24:45,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-10-27 23:24:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:45,717 INFO L225 Difference]: With dead ends: 65775 [2020-10-27 23:24:45,717 INFO L226 Difference]: Without dead ends: 55994 [2020-10-27 23:24:45,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:24:45,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55994 states. [2020-10-27 23:24:49,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55994 to 38971. [2020-10-27 23:24:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38971 states. [2020-10-27 23:24:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38971 states to 38971 states and 58964 transitions. [2020-10-27 23:24:49,307 INFO L78 Accepts]: Start accepts. Automaton has 38971 states and 58964 transitions. Word has length 113 [2020-10-27 23:24:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:49,307 INFO L481 AbstractCegarLoop]: Abstraction has 38971 states and 58964 transitions. [2020-10-27 23:24:49,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:24:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 38971 states and 58964 transitions. [2020-10-27 23:24:49,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 23:24:49,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:49,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:49,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 23:24:49,315 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:49,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:49,315 INFO L82 PathProgramCache]: Analyzing trace with hash 624299479, now seen corresponding path program 1 times [2020-10-27 23:24:49,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:49,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761791575] [2020-10-27 23:24:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:49,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:49,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:51,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:51,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:52,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:53,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:54,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:54,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:24:54,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:24:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:24:54,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 23:24:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:24:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 23:24:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:54,646 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 19 [2020-10-27 23:24:55,268 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:24:55,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:55,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:55,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:55,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:24:55,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:55,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:55,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:55,322 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 23:24:55,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761791575] [2020-10-27 23:24:55,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:55,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 23:24:55,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600583240] [2020-10-27 23:24:55,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 23:24:55,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:55,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 23:24:55,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-27 23:24:55,325 INFO L87 Difference]: Start difference. First operand 38971 states and 58964 transitions. Second operand 17 states. [2020-10-27 23:24:56,217 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 208 [2020-10-27 23:25:00,625 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 23:25:01,167 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 23:25:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:07,931 INFO L93 Difference]: Finished difference Result 97495 states and 147742 transitions. [2020-10-27 23:25:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 23:25:07,932 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 113 [2020-10-27 23:25:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:08,055 INFO L225 Difference]: With dead ends: 97495 [2020-10-27 23:25:08,055 INFO L226 Difference]: Without dead ends: 68742 [2020-10-27 23:25:08,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=429, Invalid=1377, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 23:25:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68742 states. [2020-10-27 23:25:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68742 to 42573. [2020-10-27 23:25:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42573 states. [2020-10-27 23:25:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42573 states to 42573 states and 64296 transitions. [2020-10-27 23:25:12,070 INFO L78 Accepts]: Start accepts. Automaton has 42573 states and 64296 transitions. Word has length 113 [2020-10-27 23:25:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:12,071 INFO L481 AbstractCegarLoop]: Abstraction has 42573 states and 64296 transitions. [2020-10-27 23:25:12,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 23:25:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 42573 states and 64296 transitions. [2020-10-27 23:25:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 23:25:12,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:12,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:12,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 23:25:12,078 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:12,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1353615344, now seen corresponding path program 1 times [2020-10-27 23:25:12,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:12,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989139151] [2020-10-27 23:25:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:12,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:12,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:13,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:15,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:15,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:17,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:17,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 23:25:17,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:25:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:25:17,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:25:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:25:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 23:25:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:17,526 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:25:17,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:17,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:17,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:17,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:17,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:17,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:25:17,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:17,584 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 23:25:17,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989139151] [2020-10-27 23:25:17,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:17,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:25:17,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631158868] [2020-10-27 23:25:17,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:25:17,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:17,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:25:17,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:25:17,586 INFO L87 Difference]: Start difference. First operand 42573 states and 64296 transitions. Second operand 5 states. [2020-10-27 23:25:19,310 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:25:23,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:23,501 INFO L93 Difference]: Finished difference Result 85593 states and 129154 transitions. [2020-10-27 23:25:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:25:23,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-27 23:25:23,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:23,579 INFO L225 Difference]: With dead ends: 85593 [2020-10-27 23:25:23,579 INFO L226 Difference]: Without dead ends: 43123 [2020-10-27 23:25:23,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:25:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43123 states. [2020-10-27 23:25:27,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43123 to 42802. [2020-10-27 23:25:27,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42802 states. [2020-10-27 23:25:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42802 states to 42802 states and 64554 transitions. [2020-10-27 23:25:27,545 INFO L78 Accepts]: Start accepts. Automaton has 42802 states and 64554 transitions. Word has length 113 [2020-10-27 23:25:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:27,546 INFO L481 AbstractCegarLoop]: Abstraction has 42802 states and 64554 transitions. [2020-10-27 23:25:27,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:25:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 42802 states and 64554 transitions. [2020-10-27 23:25:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 23:25:27,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:27,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:27,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 23:25:27,554 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:27,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1185615960, now seen corresponding path program 1 times [2020-10-27 23:25:27,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:27,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890221361] [2020-10-27 23:25:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:27,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:27,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:28,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:28,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:30,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:31,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:32,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:32,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 23:25:32,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:25:32,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:25:32,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:25:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:25:32,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 23:25:32,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:32,977 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:25:32,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:32,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:32,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:32,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:25:32,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:33,015 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 23:25:33,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890221361] [2020-10-27 23:25:33,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:33,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:25:33,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198463078] [2020-10-27 23:25:33,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:25:33,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:33,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:25:33,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:25:33,018 INFO L87 Difference]: Start difference. First operand 42802 states and 64554 transitions. Second operand 5 states. [2020-10-27 23:25:37,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:37,418 INFO L93 Difference]: Finished difference Result 74635 states and 112762 transitions. [2020-10-27 23:25:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:25:37,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-27 23:25:37,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:37,497 INFO L225 Difference]: With dead ends: 74635 [2020-10-27 23:25:37,498 INFO L226 Difference]: Without dead ends: 42802 [2020-10-27 23:25:37,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:25:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42802 states. [2020-10-27 23:25:41,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42802 to 42802. [2020-10-27 23:25:41,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42802 states. [2020-10-27 23:25:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42802 states to 42802 states and 64548 transitions. [2020-10-27 23:25:41,252 INFO L78 Accepts]: Start accepts. Automaton has 42802 states and 64548 transitions. Word has length 114 [2020-10-27 23:25:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:41,252 INFO L481 AbstractCegarLoop]: Abstraction has 42802 states and 64548 transitions. [2020-10-27 23:25:41,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:25:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 42802 states and 64548 transitions. [2020-10-27 23:25:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 23:25:41,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:41,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:41,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 23:25:41,261 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:41,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:41,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1843519795, now seen corresponding path program 1 times [2020-10-27 23:25:41,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:41,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413688805] [2020-10-27 23:25:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:42,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:45,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:45,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 23:25:45,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:25:45,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4601 [2020-10-27 23:25:45,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:25:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:25:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 23:25:45,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:46,333 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:25:46,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:46,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:46,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:46,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:46,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:25:46,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:46,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:46,378 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 23:25:46,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413688805] [2020-10-27 23:25:46,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:46,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:25:46,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176202054] [2020-10-27 23:25:46,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:25:46,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:25:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:25:46,381 INFO L87 Difference]: Start difference. First operand 42802 states and 64548 transitions. Second operand 5 states. [2020-10-27 23:25:48,151 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:25:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:52,117 INFO L93 Difference]: Finished difference Result 68638 states and 103749 transitions. [2020-10-27 23:25:52,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:25:52,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-27 23:25:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:52,164 INFO L225 Difference]: With dead ends: 68638 [2020-10-27 23:25:52,165 INFO L226 Difference]: Without dead ends: 37844 [2020-10-27 23:25:52,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:25:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37844 states. [2020-10-27 23:25:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37844 to 37386. [2020-10-27 23:25:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37386 states. [2020-10-27 23:25:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37386 states to 37386 states and 56156 transitions. [2020-10-27 23:25:55,723 INFO L78 Accepts]: Start accepts. Automaton has 37386 states and 56156 transitions. Word has length 115 [2020-10-27 23:25:55,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:55,723 INFO L481 AbstractCegarLoop]: Abstraction has 37386 states and 56156 transitions. [2020-10-27 23:25:55,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:25:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand 37386 states and 56156 transitions. [2020-10-27 23:25:55,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 23:25:55,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:55,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:55,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 23:25:55,731 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:55,731 INFO L82 PathProgramCache]: Analyzing trace with hash 743166837, now seen corresponding path program 1 times [2020-10-27 23:25:55,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:55,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475053470] [2020-10-27 23:25:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:55,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:55,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:55,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:56,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:58,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:58,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 23:25:58,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:25:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2596 [2020-10-27 23:25:58,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:25:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 23:25:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 23:25:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:58,748 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:25:58,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:58,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:58,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:58,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:58,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:25:58,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:25:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 23:25:58,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:58,797 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 23:25:58,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475053470] [2020-10-27 23:25:58,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:58,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:25:58,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235432204] [2020-10-27 23:25:58,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:25:58,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:58,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:25:58,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:25:58,799 INFO L87 Difference]: Start difference. First operand 37386 states and 56156 transitions. Second operand 6 states. [2020-10-27 23:25:59,189 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:26:03,748 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 23:26:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:06,702 INFO L93 Difference]: Finished difference Result 81817 states and 125472 transitions. [2020-10-27 23:26:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 23:26:06,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-27 23:26:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:06,777 INFO L225 Difference]: With dead ends: 81817 [2020-10-27 23:26:06,778 INFO L226 Difference]: Without dead ends: 51627 [2020-10-27 23:26:06,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:26:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51627 states.